QUARTERLY REPORT - For the period ending 31 March 2020
HIGHLIGHTS
Increased cash flow
- Mine operating cash flow increased 10% quarter-on-quarter (QoQ) to A$257.4 million
- Net mine cash flow increased 11% QoQ to A$159.7 million
- Record net mine cash flow at Mungari (A$31.9 million) and Cracow (A$27.6 million)
- Group free cash flow increased 33% QoQ to A$111.5 million
- Total liquidity of A$528.9 million including cash of A$168.9 million and an undrawn A$360.0 million revolver
Improved Sustainability performance
- Continued improvement in safety performance with TRIF1 reduced to 7.2 (31 December 2019: 8.4)
- MSCI ESG Rating upgraded to A from BBB
Consistent operational delivery
- No material impact to Evolution's operations from COVID-19 virus
- Group gold production declined 3% QoQ to 165,502 ounces
- All-inSustaining Cost2 (AISC) declined 7% QoQ to A$991 per ounce (US$652/oz)3
Red Lake to drive significant growth
- Successful completion of Red Lake gold mine acquisition in Ontario, Canada on 31 March 2020
- Leaner site leadership team established and Interim General Manager appointed
- Evolution to receive A$18.8 million in cash flow for March 2020 quarter under 'locked box' mechanism
Continued exploration success with best intersections at:
- Red Lake's Cochenour: 6.60m (4.88m etw) grading 16.97g/t Au and 3.30m (2.67 etw) grading 11.40g/t Au
- Cowal's GRE46 and Dalwhinnie: 5.0m (4.0m etw) grading 28.9g/t Au and 12m (9.6etw) grading 10.8g/t
- Mungari's Boomer: 0.30m (0.27m etw) grading 256.74g/t Au and 1.22m (1.03m etw) grading 119.95g/t Au
FY20 Group guidance unchanged
- Group FY20 gold production, excluding Red Lake, is expected to be around 725,000 ounces at an AISC4 at the top end of guidance of A$990/oz
- Should current spot metal prices be maintained during the June quarter, net cash flow is expected to be A$90 - 95 million higher4 but AISC would be negatively impacted by ~A$20 - 25/oz due to higher royalties and lower by-product credits
This announcement is authorised by the Board of Directors.
Consolidated production and sales summary
Units | |
Gold produced | oz |
Silver produced | oz |
Copper produced | t |
C1 Cash Cost | A$/oz |
All-in Sustaining Cost | A$/oz |
All-in Cost5 | A$/oz |
Gold sold | oz |
Achieved gold price | A$/oz |
Silver sold | oz |
Achieved silver price | A$/oz |
Copper sold | t |
Achieved copper price | A$/t |
Jun 2019 | Sep 2019 | Dec 2019 | Mar 2020 | FY20 YTD | |||||||
qtr | qtr | qtr | qtr | ||||||||
194,886 | 191,967 | 170,890 | 165,502 | 528,359 | |||||||
184,693 | 182,948 | 137,262 | 118,224 | 438,435 | |||||||
5,648 | 5,382 | 5,572 | 4,832 | 15,786 | |||||||
579 | 741 | 778 | 767 | 761 | |||||||
915 | 1,018 | 1,069 | 991 | 1,026 | |||||||
1,213 | 1,330 | 1,584 | 1,584 | 1,488 | |||||||
190,810 | 205,188 | 173,408 | 167,374 | 545,970 | |||||||
1,858 | 2,111 | 2,091 | 2,366 | 2,183 | |||||||
180,039 | 175,128 | 144,757 | 118,472 | 438,357 | |||||||
22 | 25 | 24 | 27 | 25 | |||||||
5,776 | 5,370 | 5,612 | 4,801 | 15,783 | |||||||
8,350 | 8,476 | 8,802 | 8,174 | 8,500 |
- TRIF: Total recordable injury frequency. The frequency of total recordable injuries per million hours worked
- Includes C1 cash cost, plus royalties, sustaining capital, general corporate and administration expense. Calculated per ounce sold
- Using the average AUD:USD exchange rate of 0.6584 for the March 2020 quarter
- FY20 metal price assumptions for AISC calculations: gold A$2,100/oz; copper A$8,400/t
- Includes AISC plus growth (major project) capital and discovery expenditure. Calculated per ounce sold
Evolution Mining Limited Quarterly Report March 2020 | 1 |
HIGHLIGHTS
Group Total Recordable Injury Frequency (TRIF) at 31 March 2020 declined to 7.2 (31 Dec 2019: 8.4) reflecting a continued trend of improving safety performance. Evolution's MSCI ESG rating was upgraded to 'A' from 'BBB', highlighting the Company's achievements in Sustainability performance.
Group gold production for the March 2020 quarter was 165,502 ounces (Dec qtr: 170,890oz) at an AISC of A$991/oz (Dec qtr: A$1,069/oz). Using the average AUD:USD exchange rate for the quarter of 0.6584, Group AISC equated to US$652/oz - ranking Evolution as one of the lowest cost gold producers in the world.
As at 31 March 2020, Evolution had cash in the bank of A$168.9 million and bank debt of A$570.0 million post draw down of the Red Lake facility on 31 March 2020 to fund the acquisition. By the date of this report on 23 April 2020 the cash balance and liquidity had increased to approximately A$240.0 million and A$600.0 million respectively.
Evolution delivered mine operating cash flow and net mine cash flow of A$257.4 million and A$159.7 million respectively (Dec qtr: A$233.1M; A$144.4M). Mine capital expenditure increased to A$97.7 million (Sep qtr: A$88.7M).
Standout operational performances for the quarter:
- Mungari produced 32,721oz at an AISC of A$1,099/oz generating record net mine cash flow of A$31.9 million
- Cracow produced 22,227oz at an AISC of A$1,150/oz generating record net mine cash flow of A$27.6 million
- Ernest Henry produced 20,261oz at an AISC of A$(188)/oz generating net mine cash flow of A$59.6 million
rigs operating. Initial results are particularly pleasing at Cochenour where the best extensional hole intersected 6.60m (4.88m etw) grading 16.97g/t Au and the best resource definition hole intersected 3.30m (2.67 etw) grading 11.40g/t Au.
FY20 Group production, excluding Red Lake, is expected to be around 725,000 ounces at an AISC at the top end of guidance of A$990 per ounce. Should current spot metal prices be maintained during the June quarter, net cash flow is expected to be A$90 - 95 million higher4 but AISC would be negatively impacted by ~A$20 - 25/oz due to higher royalties and lower by-product credits. The majority of the higher production in the June quarter is expected to come from Mt Rawdon accessing higher grade ore in the open pit and Mt Carlton achieving first production from the higher-grade underground mine.
Group safety performance (TRIF)
8.3 | 9.3 | 8.4 |
7.2 |
FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 |
Group production (koz)
194.9 192.0 170.9 165.5
FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 |
Group AISC (A$ per ounce)
Drilling at Cowal's GRE46 and Dalwhinnie focused on underground resource conversion and extensions. Several significant intersections including 5.0m (4.0m etw) grading 28.99g/t Au and
915
1,018 1,069 991
12m (9.6etw) grading 10.8g/t Au continue to demonstrate the continuity and grade of this 2.5Moz orebody.
Infill drilling completed at the newly discovered Boomer prospect, 300 metres west of development at Frogs Leg, continued to intercept a narrow folded laminated vein with visible gold with a best intersection of 0.30m (0.27m etw) grading 256.74g/t Au and 1.22m (1.03m etw) grading 119.95g/t Au.
Resource definition and extensional drilling has commenced at Red Lake with four underground drill
FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 |
Group operating mine cash flow
(A$M)
217.4 278.7 233.1 257.4
FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 |
TRIF: Total recordable injury frequency. The frequency of total recordable injuries per million hours worked. Results above are based on a 12-month moving average
Evolution Mining Limited Quarterly Report March 2020 | 2 |
COVID-19 UPDATE
Evolution continues to actively respond to the ongoing COVID-19 virus currently impacting people and businesses globally. The health and safety of every person working at Evolution, their families and our communities remains paramount during this time.
To date there has been no material impact on Evolution's operations from the COVID-19 virus.
No Evolution employee or contractor has tested positive to COVID-19. Evolution continues to work closely with regulators and industry groups to ensure all our operations are complying with agreed protocols and all changing requirements.
Evolution is operating under protocols developed to minimise risks to our people and communities and ensure we can safely produce gold during this challenging period. These plans include activation of our crisis management protocols, suspending international travel, restricting domestic travel, suspending activities across most of the Company's greenfields exploration projects, enacting strict social distancing protocols including reducing face- to-face interactions, increasing flexible working arrangements, ensuring best practice health management is maintained at all times and regular COVID-19 communication with the entire workforce.
We have also been actively engaging with our communities to share our COVID-19 approach and offer support. Examples of community assistance include providing educational materials for local school children who are learning remotely, donating hampers to nurses in local hospitals, donating PPE and hand sanitisers to hospitals and emergency
services providers, offering temporary employment to community members who have lost their jobs, and providing iPads to a local aged care facility.
Additional site specific health and safety initiatives introduced by our operations include:
- Extending rosters to reduce movement of people
- Relocation of interstate employees
- Introducing flexible working arrangements with people working from home where possible
- Hiring additional vehicles and charter flights to ensure social distancing is maintained while travelling to site and during site activities
- Floor markings 1.5 metres apart in pre-start areas to ensure social distancing
- Reduced number of contractors permitted on site to perform mill shutdowns and extending shutdowns to perform tasks in compliance with required protocols
- Introducing occupancy limits in offices and meeting rooms
- Additional paramedics hired for the duration of the pandemic to ensure at least two paramedics are on site per roster
- Daily temperature testing and screening of all personnel on site
- Daily COVID-19 briefings to employees
Evolution Mining Limited Quarterly Report March 2020 | 3 |
OVERVIEW | ||||||||
March 2020 quarter production and cost summary1 | ||||||||
March 2020 quarter | Units | Cowal | Mungari | Mt | Mt | Cracow | Ernest | Group |
Carlton | Rawdon | Henry | ||||||
UG lat dev - capital | m | 0 | 165 | 359 | 0 | 261 | 189 | 973 |
UG lat dev - operating | m | 0 | 224 | 487 | 0 | 471 | 1,675 | 2,857 |
Total UG lateral development | m | 0 | 389 | 846 | 0 | 731 | 1,864 | 3,830 |
UG ore mined | kt | 0 | 111 | 24 | 0 | 127 | 1,755 | 2,017 |
UG grade mined | g/t | 0 | 3.62 | 3.27 | 0 | 5.62 | 0.60 | 1.11 |
OP capital waste | kt | 4,625 | 5 | 955 | 884 | 0 | 0 | 6,469 |
OP operating waste | kt | 0 | 400 | 245 | 873 | 0 | 0 | 1,517 |
OP ore mined | kt | 626 | 563 | 168 | 1,137 | 0 | 0 | 2,494 |
OP grade mined | g/t | 0.94 | 2.04 | 3.62 | 0.58 | 0 | 0 | 1.21 |
Total ore mined | kt | 626 | 674 | 191 | 1,137 | 127 | 1,755 | 4,511 |
Total tonnes processed | kt | 2,026 | 471 | 220 | 833 | 133 | 1,496 | 5,179 |
Grade processed | g/t | 1.15 | 2.39 | 2.81 | 0.70 | 5.72 | 0.60 | 1.22 |
Recovery | % | 81.1 | 90.6 | 82.7 | 87.9 | 90.7 | 70.3 | 81.7 |
Gold produced | oz | 60,554 | 32,721 | 13,306 | 16,434 | 22,227 | 20,261 | 165,502 |
Silver produced | oz | 14,251 | 2,632 | 55,216 | 19,546 | 10,398 | 16,181 | 118,224 |
Copper produced | t | 0 | 0 | 362 | 0 | 0 | 4,470 | 4,832 |
Gold sold | oz | 59,451 | 33,028 | 12,931 | 16,088 | 22,307 | 23,570 | 167,374 |
Achieved gold price | A$/oz | 2,307 | 2,301 | 2,756 | 2,415 | 2,387 | 2,341 | 2,366 |
Silver sold | oz | 14,251 | 2,632 | 55,463 | 19,546 | 10,398 | 16,181 | 118,472 |
Achieved silver price | A$/oz | 28 | 25 | 27 | 25 | 25 | 27 | 27 |
Copper sold | t | 0 | 0 | 331 | 0 | 0 | 4,470 | 4,801 |
Achieved copper price | A$/t | 0 | 0 | 8,938 | 0 | 0 | 8,117 | 8,174 |
Cost Summary | ||||||||
Mining | A$/prod oz | 88 | 681 | 229 | 369 | 459 | 355 | |
Processing | A$/prod oz | 559 | 346 | 636 | 638 | 243 | 457 | |
Administration and selling costs | A$/prod oz | 133 | 99 | 451 | 173 | 149 | 192 | |
Stockpile adjustments | A$/prod oz | 140 | (162) | (4) | (27) | 18 | 19 | |
By-product credits | A$/prod oz | (7) | (2) | (335) | (30) | (12) | (1,812) | (256) |
C1 Cash Cost | A$/prod oz | 914 | 962 | 977 | 1,123 | 857 | (510) | 767 |
C1 Cash Cost | A$/sold oz | 931 | 953 | 1,005 | 1,148 | 854 | (439) | 759 |
Royalties | A$/sold oz | 66 | 61 | 189 | 118 | 132 | 178 | 104 |
Gold in Circuit and other | A$/sold oz | (32) | 16 | 103 | (23) | 4 | (2) | |
adjustments | ||||||||
Sustaining capital2 | A$/sold oz | 59 | 37 | 85 | 96 | 150 | 72 | 78 |
Reclamation and other | A$/sold oz | 7 | 32 | 35 | 19 | 11 | 15 | |
adjustments | ||||||||
Administration costs3 | A$/sold oz | 38 | ||||||
All-in Sustaining Cost | A$/sold oz | 1,031 | 1,099 | 1,417 | 1,357 | 1,150 | (188) | 991 |
Major project capital | A$/sold oz | 857 | 121 | 1,708 | 460 | 33 | 0 | 509 |
Discovery | A$/sold oz | 122 | 117 | 13 | 2 | 22 | 0 | 83 |
All-in Cost | A$/sold oz | 2,011 | 1,337 | 3,138 | 1,819 | 1,205 | (188) | 1,584 |
Depreciation & Amortisation4 | A$/prod oz | 413 | 463 | 616 | 509 | 470 | 1,459 | 586 |
- All metal production is reported as payable. Ernest Henry mining and processing statistics are in 100% terms while costs represent Evolution's cost
- Sustaining Capital includes 60% UG mine development capital. Group Sustaining Capital includes A$3.96/oz for Corporate capital expenditure
- Includes Share Based Payments
- Group Depreciation and Amortisation includes non-cash Fair Value Unwind Amortisation of A$39/oz in relation to Cowal (A$34/oz) and Mungari
($88/oz) and Corporate Depreciation and Amortisation of A$2.00/oz
Evolution Mining Limited Quarterly Report March 2020 | 4 |
OVERVIEW | ||||||||
FY20 year to date production and cost summary1 | ||||||||
FY20 YTD | Units | Cowal | Mungari | Mt | Mt | Cracow | Ernest | Group |
Carlton | Rawdon | Henry | ||||||
UG lat dev - capital | m | 1,935 | 296 | 1,389 | 0 | 1,321 | 511 | 5,451 |
UG lat dev - operating | m | 0 | 789 | 487 | 0 | 1,849 | 5,230 | 8,355 |
Total UG lateral development | m | 1,935 | 1,085 | 1,876 | 0 | 3,170 | 5,741 | 13,806 |
UG ore mined | kt | 0 | 330 | 24 | 0 | 360 | 5276 | 5,990 |
UG grade mined | g/t | 0 | 3.51 | 3.27 | 0.00 | 5.79 | 0.58 | 1.07 |
OP capital waste | kt | 11,047 | 5 | 3,248 | 2,811 | 0 | 0 | 17,111 |
OP operating waste | kt | 165 | 2,299 | 741 | 2,532 | 0 | 0 | 5,737 |
OP ore mined | kt | 2,230 | 1,381 | 538 | 2,841 | 0 | 0 | 6,989 |
OP grade mined | g/t | 1.21 | 1.97 | 3.20 | 0.67 | 0.00 | 0.00 | 1.29 |
Total ore mined | kt | 2,230 | 1,711 | 562 | 2,841 | 360 | 5,276 | 12,979 |
Total tonnes processed | kt | 6,413 | 1,410 | 661 | 2,484 | 389 | 5,008 | 16,366 |
Grade processed | g/t | 1.20 | 2.33 | 2.97 | 0.80 | 5.60 | 0.58 | 1.22 |
Recovery | % | 81.6 | 91.2 | 84.3 | 88.2 | 91.5 | 75.0 | 82.1 |
Gold produced | oz | 201,441 | 96,210 | 43,970 | 56,022 | 63,997 | 66,719 | 528,359 |
Silver produced | oz | 123,849 | 9,128 | 160,327 | 66,642 | 28,090 | 50,399 | 438,435 |
Copper produced | t | 0 | 0 | 933 | 0 | 0 | 14,853 | 15,786 |
Gold sold | oz | 208,588 | 97,005 | 47,787 | 55,862 | 63,568 | 73,160 | 545,970 |
Achieved gold price | A$/oz | 2,144 | 2,136 | 2,344 | 2,224 | 2,209 | 2,197 | 2,183 |
Silver sold | oz | 123,849 | 9,128 | 160,250 | 66,642 | 28,090 | 50,399 | 438,357 |
Achieved silver price | A$/oz | 25 | 25 | 26 | 25 | 23 | 26 | 25 |
Copper sold | t | 0 | 0 | 930 | 0 | 0 | 14,853 | 15,783 |
Achieved copper price | A$/t | 0 | 0 | 8,695 | 0 | 0 | 8,488 | 8,500 |
Cost Summary | ||||||||
Mining | A$/prod oz | 96 | 743 | 185 | 573 | 460 | 370 | |
Processing | A$/prod oz | 471 | 352 | 597 | 582 | 247 | 417 | |
Administration and selling costs | A$/prod oz | 128 | 110 | 417 | 156 | 163 | 190 | |
Stockpile adjustments | A$/prod oz | 148 | (86) | 61 | 120 | (6) | 58 | |
By-product credits | A$/prod oz | (15) | (2) | (278) | (30) | (10) | (1,909) | (275) |
C1 Cash Cost | A$/prod oz | 829 | 1,118 | 981 | 1,401 | 855 | (729) | 761 |
C1 Cash Cost | A$/sold oz | 800 | 1,108 | 903 | 1,405 | 861 | (665) | 737 |
Royalties | A$/sold oz | 64 | 53 | 180 | 108 | 120 | 176 | 98 |
Gold in Circuit and other | A$/sold oz | 20 | (1) | 46 | (16) | (4) | 9 | |
adjustments | ||||||||
Sustaining capital2 | A$/sold oz | 39 | 77 | 333 | 147 | 256 | 111 | 120 |
Reclamation and other | A$/sold oz | 6 | 25 | 34 | 17 | 12 | 13 | |
adjustments | ||||||||
Administration costs3 | A$/sold oz | 49 | ||||||
All-in Sustaining Cost | A$/sold oz | 931 | 1,263 | 1,496 | 1,660 | 1,244 | (378) | 1,026 |
Major project capital | A$/sold oz | 549 | 57 | 1,199 | 207 | 59 | 0 | 353 |
Discovery | A$/sold oz | 174 | 147 | 14 | 2 | 33 | 0 | 109 |
All-in Cost | A$/sold oz | 1,654 | 1,467 | 2,708 | 1,868 | 1,336 | (378) | 1,488 |
Depreciation & Amortisation4 | A$/prod oz | 372 | 455 | 759 | 651 | 432 | 1,428 | 591 |
- All metal production is reported as payable. Ernest Henry mining and processing statistics are in 100% terms while costs represent Evolution's cost and not solely the cost of Ernest Henry's operation
- Sustaining Capital includes 60% UG mine development capital. Group Sustaining Capital includes A$1.69/oz for Corporate capital expenditure
- Includes Share Based Payments
- Group Depreciation and Amortisation includes non-cash Fair Value Unwind Amortisation of A$30/oz in relation to Cowal (A$34/oz) and Mungari
($91/oz) and Corporate Depreciation and Amortisation of A$1.89/oz
Evolution Mining Limited Quarterly Report March 2020 | 5 |
OPERATIONS
Cowal, New South Wales (100%) | Mungari, Western Australia (100%) |
Cowal produced 60,554oz of gold at an AISC of A$1,031/oz (Dec qtr: 65,080/oz, AISC A$898/oz). The planned lower production reflected the continued treatment of low grade stockpile material which was partially upgraded through ore-sorting.
Mine operating cash flow for the quarter was A$89.0 million (Dec qtr: A$95.9M). Net mine cash flow was A$34.5 million, post sustaining capital of A$3.6 million and major capital of A$51.0 million. Major projects investment included a continuation of Stage H stripping, the completion of the water pipeline twinning, the continuation of the Integrated Waste Landform (IWL) tailings facility construction and the underground Pre-Feasibility Study (PFS).
Total ore processed of 2.0Mt was lower than the December quarter due to both planned and unplanned shutdowns resulting in lower mill utilisation. Throughput is expected to increase back to the 9.0Mtpa run rate in the June 2020 quarter.
The combination of recent rains and increased pumping capacity through the completion of the pipeline twinning work have eased immediate water security issues. Work continues to further reduce the reliance on fresh groundwater offtake through accessing subsurface saline water sources.
GRE46 is Cowal's major project which provides significant production and mine life growth for the asset. The underground mine PFS is progressing to plan with an EPCM contractor mobilised during the quarter for initial design work. Underground drilling continues to upgrade resource classification and grow the 2.5Moz Mineral Resource. The maiden Ore Reserve is on track to be released in the December 2020 half year.
As Cowal progresses multiple projects, major capital for the year is expected to be A$165.0 - A$175.0 million. The higher investment is related to timing or new projects approved during the year comprising; Stage H development; water security infrastructure; and the underground mine PFS.
Mungari produced 32,721oz of gold at a significantly lower AISC A$1,099/oz (Dec qtr: 32,751oz, AISC A$1,344/oz).
Mine operating cash flow for the quarter was a record A$37.2 million (Dec qtr: A$30.4M). Net mine cash flow was also a record A$31.9 million (Dec qtr: A$24.8M) post sustaining and major capital investment of A$5.3 million.
The record net mine cash flow reflects a continued impressive turnaround as the operation consistently delivers to its operating plan. Mungari experienced strong margin expansion during the quarter driven by increased grade, lower sustaining capital and a higher gold price.
The Frog's Leg underground produced a consistent ore feed of 111kt at an increased grade of 3.62g/t gold (Dec qtr: 116kt at 3.27g/t gold). Total development of 389 metres was in line with operating plan.
Development to access the Boomer high grade vein is 90 metres from breaking through to the first ore position. Detailed drilling completed during the quarter informed design of the optimal access point for commencement of ore development. Vein access is expected to occur late in the June 2020 quarter.
White Foil open pit total material movement was 1,512kt, with ore mined at 563kt grading at 2.05g/t gold. Ore was sourced from both Stage 3a and 3b.
A major milestone was reached with Cutters Ridge open pit mining commencing during the quarter.
A total of 471kt of ore was processed at an average grade of 2.39g/t gold. Plant throughput was above plan but at a slightly lower rate than the December quarter as capital works commenced to achieve a sustainable 2.0Mtpa processing rate.
1,002 | 1,031 | 1,242 | 1,351 | 1,344 | |||||||
1,099 | |||||||||||
898 | |||||||||||
885 | |||||||||||
67,878oz | 75,807oz | 65,080oz | 60,554oz | 30,457oz | 30,738oz | 32,751oz | 32,721oz | ||||
FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 | FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 | ||||
Production gold (oz) | AISC (A$/oz) | Production gold (oz) | AISC (A$/oz) | ||||||||
Evolution Mining Limited Quarterly Report March 2020 | 6 |
OPERATIONS
Mt Carlton, Queensland (100%) | Mt Rawdon, Queensland (100%) |
Mt Carlton produced 13,306oz of payable gold comprising of 11,672oz contained in 12,757 dry metric tonnes (dmt) of gold concentrate and 1,634oz in gold doré (Dec qtr: 9,787oz production; 9,710oz in concentrate; 77oz gold doré). AISC decreased to A$1,417/oz (Dec qtr: A$2,182/oz).
Mine operating cash flow was A$20.1 million (Dec qtr: A$2.7 million). Net mine cash flow was negative A$3.0 million post sustaining and major capital of A$23.2 million predominantly related to developing the new underground mine and capital development in the open pit (Dec qtr: A$22.7M).
Mill throughput exceeded plan with a total of 220kt of ore at 2.81g/t gold treated (Dec qtr: 229.2kt; 2.09g/t). Recoveries averaged 82.7%.
Underground development has reached the orebody three months ahead of schedule and underground stoping will commence in the June 2020 quarter providing higher grade feed to the mill. Orebody intersections in development are broadly aligning with expectations from drilling and grade control drilling continues to infill the underground orebody to a 10 x 10m pattern.
The early delivery of the underground mine and accelerated open pit waste stripping will result in major capital for FY20 of A$65.0 - A$70.0 million. The higher capital spend this financial year is related to timing of these projects which would have been invested in FY21.
Mt Rawdon produced 16,434oz of gold at an AISC of A$1,357/oz (Dec qtr: 20,338oz; A$1,815/oz).
Mine operating cash flow was A$18.1 million (Dec qtr: A$13.9M). Net mine cash flow of A$9.1 million (Dec qtr: A$9.1M) was generated post sustaining and major capital investment of A$8.9 million.
Total material mined was in-line with plan as the western wall stabilisation project continued in the March quarter.
A total of 833kt of ore was processed at an average grade of 0.70g/t gold (Dec qtr: 832kt at 0.86 g/t). Plant recovery was 87.9% and plant utilisation was 96.2%.
Mt Rawdon is on track to deliver significantly higher production and lower AISC in the June 2020 quarter with recommencement of mining higher grade ore in the south-western end of the pit.
2,182 | 1,748 | 1,815 | 1,357 | ||||||||||
1,301 | 1,417 | 1,065 | |||||||||||
744 | |||||||||||||
28,232oz | 20,877oz | 9,787oz | 13,306oz | 24,404oz | 19,250oz | 20,338oz | 16,434oz | ||||||
FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 | FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 | ||||||
Production gold (oz) | AISC (A$/oz) | Production gold (oz) | AISC (A$/oz) | ||||||||||
Evolution Mining Limited Quarterly Report March 2020 | 7 |
OPERATIONS
Cracow, Queensland (100%)
Cracow produced 22,227oz of gold at an AISC of A$1,150/oz (Dec qtr: 19,854oz, AISC A$1,284/oz).
Mine operating cash flow for the quarter was a record A$31.7 million (Dec qtr: A$23.0M). Net mine cash flow was also a record A$27.6 million (Dec qtr: A$16.0M), post sustaining capital of A$2.2 million and major capital of A$1.8 million.
A total of 127kt of ore was mined at an average grade of 5.62g/t gold. Primary ore sources were the Baz, Coronation and Imperial ore bodies. Mining was in line with forecasts with a continued focus on delivering to plan.
Mill throughput for the quarter was 133kt with record throughput of 51.6kt achieved in the month of March.
1,329 | 1,307 | 1,284 | 1,150 | |||
18,095oz | 21,917oz | 19,854oz | 22,227oz | |||
FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 | |||
Production gold (oz) | AISC (A$/oz) | |||||
Ernest Henry, Queensland
(Economic interest; 100% gold and 30% copper production)1
Evolution's interest in Ernest Henry delivered 20,261oz of gold and 4,470t of copper at an AISC of negative A$(188)/oz (Dec qtr: 23,080oz Au and 5,355t Cu at A$(526)/oz). Production in the quarter was negatively impacted by an unplanned breakdown in the ball mill which has been repaired. With excess processing capacity available, the operation is planning to make up for some of the March shortfall in the June quarter.
Ore mined was 1,755kt at an average grade of 0.60g/t gold and 1.10% copper. Underground lateral development was 2,234m, which includes 1,675m of operating development, 189m of capital development and 370m of rehab development. Ore processed was 1,496kt at an average grade of 0.60g/t gold and 1.09% copper. Gold recovery of 72.9% and copper recovery of 95.3% was achieved with mill utilisation at 79.4%.
Cash operating costs (C1) was negative A$(510)/oz after accounting for copper and silver by-product credits (Dec qtr: A$(925)/oz). Cash operating costs (C1) included by-product credits of A$(1,812)/oz.
Copper sales in the quarter were 4,470t at an average copper price of A$8,117/t.
Operating mine cash flow for the quarter was A$61.3 million representing the gold (A$55.2 million) and by-product sales of copper (A$36.3 million) and silver (A$0.4 million), net of Evolution's contribution to operating costs of A$30.6 million. Ernest Henry contributed a net mine cash flow of A$59.6 million, post sustaining capital of A$1.7 million.
Drilling below the 1200mRL is proceeding to plan with the development of a third platform currently underway. Initial drilling results have indicated mineralisation as expected which provided confidence to move to the next stage in the program. Over 18,000m of drilling is planned for CY2020.
Regarding COVID-19, a significant volume of work has been completed to ensure the sustainability of the Ernest Henry operation. A number of measures have been implemented specifically in relation to hygiene, cleaning and social distancing. To date, no significant impacts have been noted on the Ernest Henry operation.
(188) | |||||||
(414) | (526) | ||||||
(644) | |||||||
25,820oz | 23,378oz | 23,080oz | 20,261oz | ||||
FY19 Q4 | FY20 Q1 | FY20 Q2 | FY20 Q3 | ||||
Production gold (oz) | AISC (A$/oz) | ||||||
1. All metal production is reported as payable. Ernest Henry mining and processing statistics are in 100% terms while costs represent Evolution's
costs and not solely the cost of Ernest Henry's operation
Evolution Mining Limited Quarterly Report March 2020 | 8 |
OPERATIONS
Red Lake, Ontario (100%)
(Acquisition completed 31 March 2020)
Under the 'locked box' agreement with Newmont since 1 January 2020, Evolution will receive A$18.8 million in April 2020 from Red Lake's net cash generation in the March 2020 quarter. The mine produced and sold 37,895 and 42,141 ounces respectively in the March quarter.
Red Lake's June 2020 quarter production is expected to be around 25,000 ounces at an AISC of A$2,100 - A$2,3001 per ounce as the operation focuses on implementing the interim and transformation plans. Sustaining and major capital are expected to be A$5.0 - A$7.0 million and A$15.0 - A$17.0 million respectively. Exploration investment is expected to be A$3.0 - A$4.0 million.
Since the Red Lake acquisition was announced on 26 November 2019, all of Evolution's executive team, in addition to many other senior leaders and technical experts, have spent a considerable amount of time on site to commence planning the turnaround strategy and to ensure a smooth integration into the Evolution portfolio.
Key observations include: a high level of confidence in the ability to substantially grow mineral inventory; confirmation of the belief that fixed and variable costs can be significantly reduced; very positive engagement with the workforce who acknowledge change is required to secure the long term future of the operation; and validation of the scale of the turnaround opportunity.
An interim plan is now being executed at Red Lake as part of the delivery of a longer-term operational transformation with key objectives of:
- Improving and maintaining the safety culture
- Reducing AISC to below US$1,000 per ounce
- Increasing production to above 200,000 ounces per annum
In order to recapitalise the asset and materially reduce the cost base of the operation, Evolution has committed to a significant investment in capital development and exploration over the next three years.
On 1 April 2020, immediately post completion of the acquisition, the Evolution Leadership team commenced 'virtual' town hall meetings to welcome the Red Lake team into the Evolution business. A new site leadership structure was announced and implemented which reduced leadership roles by 40%. Restructuring of the broader workforce will continue in the June 2020 quarter.
Evolution has made good progress to date in several key areas including:
- Underground development rates increased to 755 metres in March. Development is expected to average 850 - 900 metres per month in the June 2020 quarter as the operation ramps up towards sustained development rates of over 1,000 metres per month from the September 2020 quarter onwards. Development in non- core areas has been stopped
- Decommissioning of redundant underground mobile equipment
- Commenced procurement process for underground mobile equipment to increase capacity and efficiencies. Delivery of the equipment is expected by the end of FY21.
- Commencement of decommissioning the #1 shaft. Decommissioning of the Campbell shaft is scheduled for the March 2021 quarter
- Refurbishment of the Campbell mill to improve reliability is underway and expected to be completed in the September 2020 quarter
- Four diamond drills have commenced near mine resource definition and extensional drilling with a plan to increase this number to eight over the next 12 months
A discovery update is provided in the Exploration section of this report.
First gold doré bar poured at Red Lake under
Evolution ownership
1. Using an AUD:CAD FX assumption of 0.88 for the June 2020 quarter
Evolution Mining Limited Quarterly Report March 2020 | 9 |
FINANCIALS
Evolution ended quarter with cash at bank of A$168.9 million. Group cash flow improved by 33% to A$111.5 million prior to paying dividends of A$119.3 million in March and costs associated with the Red Lake transaction. The completion of the Red Lake acquisition resulted in the drawdown of A$570.0 million of syndicated debt.
Net mine cash flow for the March 2020 quarter totalled A$159.7 million, exceeding the December 2019 quarter (A$144.4M) primarily due to favourable metal prices and record quarterly net mine cash flows at Mungari and Cracow.
Mungari generated a record net mine cash flow of A$31.9 million (Dec qtr: A$24.8M). This record builds on the positive momentum at the site over the last three quarters while achieving a consistent operating performance and a sustained improvement in mill throughput rates
Cracow also generated record net mine cash flow of A$27.6 million for the quarter (Dec qtr: A$16.0m) following further increases in plant throughput due to sustained improvements in crusher and mill utilisation as well as reduced capital spend at the site.
Cowal generated net mine cash flow of A$34.5 million (Dec qtr: A$51.9M) after investing A$53.7 million.
Ernest Henry and Mt Rawdon's net mine cash flows were in line with the December quarter at A$59.6 million, and A$9.1 million respectively (Dec qtr: A$62.7M; and A$9.0M) while Mt Carlton's net mine cash flow was negative A$3.0 million (due to the investment on developing the new underground mine) but was better than the December quarter (negative A$20.0M) due to improved costs, higher sales volumes and a higher gold price.
During the March quarter, Evolution sold 167,374oz of gold at an average gold price of A2,366/oz (Dec qtr: 173,408oz at A$2,091/oz). Deliveries into the hedge book totalled 25,000oz at an average price of A$1,786/oz with the remaining 142,374oz of gold was delivered on spot markets at an average price of A$2,468/oz.
Operating | Sustaining | Major | ||||||
Cash flow (A$ Millions) | Mine Cash | |||||||
Capital | Capital1 | |||||||
flow | ||||||||
Cowal | 89.0 | (3.6) | (51.0) | |||||
Mungari | 37.2 | (1.9) | (3.4) | |||||
Mt Carlton | 20.1 | (1.0) | (22.2) | |||||
Mt Rawdon | 18.1 | (1.5) | (7.4) | |||||
Cracow | 31.7 | (2.2) | (1.8) | |||||
Ernest Henry | 61.3 | (1.7) | 0.0 | |||||
March 2020 Quarter | 257.4 | (12.5) | (85.9) | |||||
December 2019 Quarter | 233.1 | (20.1) | (68.6) | |||||
September 2019 Quarter | 278.7 | (26.9) | (44.4) | |||||
Year to Date March 2020 | 769.3 | (60.2) | (198.8) | |||||
1. Major Capital includes 100% of the UG mine development capital
Net | Net Mine |
Mine | Cash |
Cash | Flow |
flow | YTD |
34.5 | 176.3 |
31.9 | 72.9 |
(3.0) | (10.2) |
9.1 | 26.7 |
27.6 | 57.5 |
59.6 | 188.4 |
159.7 | |
144.4 | |
207.4 | |
511.5 |
Key capital investment items for the quarter included:
- Cowal: Stage H Development (A$34.4 million); Integrated Waste Landform (A$5.5 million); Water security infrastructure (A$5.9 million), and underground mine Pre-Feasibility Study (A$2.7 million)
- Mt. Carlton: Underground mine development (A$7.6 million) and Stage 4 Capital Stripping (A$6.4 million)
- Mungari: Boomer deposit access (A$3.5 million)
- Mt Rawdon: Open pit capital waste stripping and tails storage buttressing project (A$7.4 million)
FY20 Group Sustaining Capital is expected to be below the bottom end of guidance at A$80.0 - A$85.0 million (FY20 guidance: A$90.0 - A$130.0 million). Major Capital is expected to be above the top end of guidance at A$265.0 - A$275.0 million (FY20 guidance: (A$195.0 - A$235.0 million). This is primarily driven by acceleration of projects at Cowal and at Mt Carlton. Details are outlined in the commentary of the respective operations.
Evolution Mining Limited Quarterly Report March 2020 | 10 |
FINANCIALS
Discovery expenditure for the quarter was A$13.9 million (Dec qtr: A$23.5M). This included investment in the Warraga Exploration Decline at Cowal (A$2.8 million), continued drilling at the GRE underground at Cowal (A$5.7 million), and commencement of the Crush Creek and Cue projects (A$2.0 million). A total of 77,615 metres were drilled across the group (Dec qtr: 52,000m).
Corporate administration costs were A$5.5 million (Dec qtr: A$7.8M).
The table below highlights the cash flow and movement during the quarter and for the financial year.
Cash flow (A$ Millions) | September | December | March | March | ||||||||||
2019 Qtr | 2019 Qtr | 2020 Qtr | 2020 YTD | |||||||||||
Operating Mine Cash flow | 278.7 | 233.1 | 257.4 | 769.3 | ||||||||||
Total Capital | (71.3) | (88.7) | (97.7) | (257.7) | ||||||||||
Net Mine Cash flow | 207.4 | 144.4 | 159.7 | 511.5 | ||||||||||
Corporate and discovery | (29.8) | (31.3) | (19.4) | (80.6) | ||||||||||
Net Interest expense | (1.8) | (1.7) | (1.2) | (4.7) | ||||||||||
Dividend received | 0.0 | 2.2 | 0.0 | 2.2 | ||||||||||
Working Capital Movement | 3.8 | (6.1) | (13.3) | (15.6) | ||||||||||
Income Tax | (20.9) | (23.7) | (14.3) | (58.9) | ||||||||||
Group Cash flow | 158.6 | 83.8 | 111.5 | 353.9 | ||||||||||
Dividend payment | (102.1) | 0.0 | (119.3) | (221.4) | ||||||||||
Debt repayment | (25.0) | (275.0) | (300.0) | |||||||||||
Debt drawdown for Red Lake | 570.0 | 570.0 | ||||||||||||
Payment for Red Lake | (551.9) | (551.9) | ||||||||||||
Acquisitions and Integration | 0.0 | (5.2) | (11.7) | (16.9) | ||||||||||
Net Group Cash flow | 31.5 | (196.4) | (1.4) | (166.3) | ||||||||||
Opening Cash Balance 1 July 2019 | 335.1 | |||||||||||||
Opening Cash Balance 1 October 2019 | 366.7 | |||||||||||||
Opening Cash Balance 1 January 2020 | 170.3 | |||||||||||||
Closing Group Cash Balance | 366.7 | 170.3 | 168.9 | 168.9 | ||||||||||
Evolution's hedge book as at 31 March 2020 was 325,000oz at an average price of A$1,865/oz for deliveries of 25,000oz per quarter to June 2023.
At the completion of the Red Lake transaction, the company sold forward 120,000 ounces of gold (10,000 ounces per quarter) at an average spot price of C$2,302/oz through to 30 June 2023. Due to the backwardation of the forward market this results in an averaged hedged price of C$2,272/oz. This is as part of the Company's approach to have all operations funding their own capital investment requirements.
Interactive Analyst CentreTM
Evolution's financial and operational information is available to view via the Interactive Analyst CentreTM provided on our website at www.evolutionmining.com.auunder the Investors tab. This useful interactive platform allows users to chart and export Evolution's historical results for further analysis.
Evolution Mining Limited Quarterly Report March 2020 | 11 |
EXPLORATION
Exploration highlights
Red Lake
- Resource definition and extensional drilling commenced with four underground drill rigs. Initial results at Cochenour are encouraging with the best extensional hole intersecting 6.60m (4.88m etw) grading 16.97g/t Au and the best resource definition holes intersecting 3.30m (2.67 etw) grading 11.40g/t Au and 0.20m (0.15m etw) grading 955.53g/t Au
Cowal
- Drilling at GRE46 and Dalwhinnie is now focused on underground resource conversion and extending mineralisation beyond underground resource outlines. Several significant intersections including: 5.0m (4.0m etw) grading 28.99g/t Au and 12m (9.6m etw) grading 10.8g/t Au continue to demonstrate continuity and grade of the orebody
Mungari
- Infill drilling completed at the Boomer, prospect 300m west of development at Frogs Leg, continued to intercept a narrow folded laminated vein with visible gold. The best intersections returned were 0.24m (0.22m etw) grading 102.88g/t Au and 1.22m (1.03m etw) grading 119.95g/t Au. An access drive from the Frogs Leg decline is advancing and is expected to intersect the Boomer vein late in the June 2020 quarter
Mt Carlton
- Drilling commenced at the Crush Creek project (EVN earning 100%) located 30 kilometres southeast of Mt Carlton. Crush Creek consists of numerous high grade mineralised epithermal vein targets which could become important satellite ore feed for the operations at Mt Carlton. A second rig is expected to be added to the drilling program during the June 2020 quarter. Evolution expects initial results will start to become available late in the June 2020 quarter.
Total drilling of 23,888m (resource definition) and 77,615m (discovery) was completed during the quarter. Evolution's exploration tenement holding interests in Australia and Canada now stands at 8,708 km2.
Red Lake, Ontario (100%)
During the March quarter, drilling was focused on expanding and converting resource to reserves for the near- term mine plan. It was concentrated at the Cochenour and the Balmer Complexes. A total of 47 underground diamond drill holes (7,104m) were drilled utilising four drill rigs, two at each complex. Balmer Complex drilled a total of 21 underground drill holes (3,219m) and Cochenour Complex drilled a total of 26 diamond drill holes (3,885m).
Figure 1: Plan view showing map of the Red Lake Operations - Lower Red Lake and Cochenour
Evolution Mining Limited Quarterly Report March 2020 | 12 |
EXPLORATION
Cochenour
Twenty six diamond drill holes were started and/or completed at Cochenour for a total of 3,885 metres. All holes were drilled by two underground rigs drilling from 4485L Exploration Drift.
Figure 2: Inclined Long Section Looking East, highlighting all pierce points of holes drilled in March quarter
A large number of results received during the quarter were from drilling completed in late 2019 and included complete results for eight holes completed in this period. The best intercepts include:
- 6.60m (4.88m etw) grading 16.97g/t Au from 122.8m (C44141) [BIF (Extensional)]
- 0.20m (0.15m etw) grading 955.53g/t Au from 31m (C44143B) [BIF (Infill)]
- 4.40m (3.18m etw) grading 7.32g/t Au from 64.9m (C44158) [BIF (Infill)]
- 3.30m (2.67 etw) grading 11.40g/t Au from 69.5m (C44154) [BIF (Infill)]
Drilling will continue from the 4485L exploration drift in the June 2020 quarter to extend existing ore panels along with conversion of inferred resource to indicated classification.
Lower Red Lake
Underground drilling at Lower Red Lake utilised two drills targeting the Deep Sulphides (DS), Hanging Wall 7 (HW7) and Twin Otter (TO) targets. The drilling programs were designed for resource conversion and expansion of known mineralisation.
Significant results from infill drilling at Twin Otter include:
- 6.70 (5.78m etw) grading 5.70g/t from 164.3m (44L911)
- 7.00 (5.32m etw) grading 3.41g/t from 175.9m (44L911)
Grades and widths are consistent with those predicted in the resource model and have increased confidence in grade continuity Twin Otter.
Evolution Mining Limited Quarterly Report March 2020 | 13 |
EXPLORATION
Figure 3: Long Section looking North East, highlighting all pierce points of diamond drill holes drilled in March
quarter within the Twin Otter project
Results from Deep Sulphides include:
- 4.40m (4.26m etw) grading 6.87g/t from 69.2m (43L502) from extension drilling
- 3.80m (3.25m etw) grading 6.85g/t from 98.4m (43L503) from infill drilling
Mineralised zones are typically 1 - 5m wide with an average strike length of 50m.
Figure 4: Long Section Looking North East, highlighting all pierce points of holes drilled in March quarter
targeting the Deep Sulphides project
Evolution Mining Limited Quarterly Report March 2020 | 14 |
EXPLORATION
Cowal, New South Wales (100%)
During the March quarter, resource definition drilling continued at GRE46 with 17 surface diamond holes (5,061m), and 65 underground diamond holes (17,901m) being completed. Regional exploration continued at the Reflector, Central Cowal and E46 North target areas with the drilling of 226 aircore holes (25,462m) and two diamond drill holes (709.1m).
GRE46
Hole numbers 1535DD453G and 1535DD544C returned the deepest intercepts to date, 880m and 910m below surface respectively. Pleasingly these results confirm that mineralisation remains open down plunge. Assay results include:
- 17m (13.6m etw) grading 4.56g/t from 1,267m (1535DD544C)
- 28m (22.4m etw) grading 2.36g/t from 1,140m (1535DD453G)
- 5m (4m etw) grading 9.19g/t from 1,222m (1535DD453G)
- including 1m (0.8m etw) grading 38.7g/t from 1,225m
Surface drilling during the June quarter will focus on mineral resource extensions down plunge of known shoots.
The underground drilling program targeted mineralisation in the lava and Dalwhinne/volcaniclastics below the Warraga Decline with the aim of converting resources from inferred to indicated classification. Significant intercepts included:
- 5m (4m etw) grading 28.99g/t from 40m (GRUD0120)
- 12m (9.6m etw) grading 10.80g/t from 409m (GRUD0109)
- 23m (18.4m etw) grading 5.12g/t from 252m (GRUD0116)
- 34m (27.2m etw) grading 3.07g/t from 548m (GRUD0116)
- 22m (17.6m etw) grading 4.3g/t from 246m (GRUD0108)
Underground drilling continues from the eastern drill platforms targeting inferred mineral resource blocks in order to convert to indicated classification in the northern lava and the Dalwhinnie areas.
Figure 5: Long projection of the GRE46 structure looking west showing the location of drilling
completed during the March 2020 quarter
Evolution Mining Limited Quarterly Report March 2020 | 15 |
EXPLORATION
Mungari, Western Australia (100%)
A total of 12,930m of drilling was completed across three targets at Mungari during the quarter (Figure 6). Of this drilling, 45 surface diamond drill holes were completed at the Boomer prospect for 11,232m.
Figure 6: Location map of Mungari resource definition and regional projects locations in the March quarter
Boomer
Extensional and infill drill holes at Boomer, located 300m west of Frog's Leg development, continues to intercept a narrow, folded, laminated quartz vein, predominantly dipping 65° towards the south-west, with a shallow southeast plunge. Step-out drilling discovered a new lower lode, also folded and laminated, with a similar dip and plunge orientation. The vein contained visible gold and base metal sulphides. Best intercepts for the quarter include:
- 1.22m (1.03m etw) grading 119.95g/t Au from 146.3m (EVDD0110)
- 0.24 (0.22m etw) grading 102.88g/t Au from 215.8m (EVDD0082A)
- 0.38m (0.33m etw) grading 37.24g/t Au from 197.7m (EVDD0072)
Assays are pending for seven holes. The Boomer access drive is 185m from the Frogs Leg decline and is expected to intersect the Boomer vein late in the June 2020 quarter.
Evolution Mining Limited Quarterly Report March 2020 | 16 |
EXPLORATION
Figure 7: Boomer prospect long section showing location of drilling during the March quarter
Picante Trend
Drilling continued along the Picante Trend approximately 1.5km north of the planned Castle Hill pit. Two diamond holes (443m in total) targeted a small high grade mineralised shoot now called Muy Picante. The holes intercepted mineralisation on the sheared contact between the tonalite and ultramafic and assisted with understanding controls on mineralisation and grade trends for estimation. Best intercepts include:
- 4.00m (3.87m etw) at 1.65g/t Au from 108 m (PICD030)
- 1.00m (0.97m etw) at 31.20g/t Au from 140 m (PICD031)
- 9.00 (8.70m etw) at 1.96g/t Au from 163 m (PICD031)
Exploration will continue along the 5km strike extent of the Picante Trend in FY21.
Evolution Mining Limited Quarterly Report March 2020 | 17 |
EXPLORATION
Figure 8: Long section of the Picante Trend looking west showing the location of drilling completed during the
March quarter (Intervals reported at >0.3 g/t with a max dilution of 1m)
Australian Greenfields Exploration
At the Cue Project (EVN earning 75% from Musgrave Minerals Ltd, ASX:MGV) an initial diamond drilling program was completed with two holes drilled for 574m during the quarter. A large regional aircore drilling program is ongoing over Lake Austin, with 138 holes drilled for 14,382m. It is anticipated the program will be completed early in the June 2020 quarter.
At the nearby Murchison Joint Venture (EVN earning 80% from Enterprise Metals Limited, AZX:EML) an aircore drilling program completed 77 holes (6034m) before it was suspended due to COVID-19 restrictions.
Exploration programs were suspended on the Drummond Project (EVN earning 80% from Andromeda Metals Limited, ASX:ADN) and at Connors Arc (EVN 100%) during the quarter also as a result of COVID-19.
Further information on all reported exploration results included in this report is provided in the Drill Hole Information Summary and JORC Code 2012 Table 1 presented in Appendix 1 of this report.
Evolution Mining Limited Quarterly Report March 2020 | 18 |
EXPLORATION
Competent person statement
Exploration results
The information in this report that relates to exploration results listed in the table below is based on work compiled by the person whose name appears in the same row, who is employed on a full-time basis by Evolution Mining Limited and is a member of the Australasian Institute of Mining and Metallurgy. Each person named in the table below has sufficient experience which is relevant to the style of mineralisation and types of deposits under consideration and to the activity which he has undertaken to qualify as a Competent Person as defined in the JORC Code 2012. Each person named in the table consents to the inclusion in this report of the matters based on his information in the form and context in which it appears.
Activity | Competent person | |||
Mungari resource definition and exploration results | Marcelle Watson | |||
Cowal resource definition and exploration results | James Biggam | |||
Red Lake resource definition and exploration results | Dean Fredericksen | |||
Forward looking statements
This report prepared by Evolution Mining Limited (or "the Company") include forward looking statements. Often, but not always, forward looking statements can generally be identified by the use of forward looking words such as "may", "will", "expect", "intend", "plan", "estimate", "anticipate", "continue", and "guidance", or other similar words and may include, without limitation, statements regarding plans, strategies and objectives of management, anticipated production or construction commencement dates and expected costs or production outputs.
Forward looking statements inherently involve known and unknown risks, uncertainties and other factors that may cause the Company's actual results, performance and achievements to differ materially from any future results, performance or achievements. Relevant factors may include, but are not limited to, changes in commodity prices, foreign exchange fluctuations and general economic conditions, increased costs and demand for production inputs, the speculative nature of exploration and project development, including the risks of obtaining necessary licenses and permits and diminishing quantities or grades of reserves, political and social risks, changes to the regulatory framework within which the Company operates or may in the future operate, environmental conditions including extreme weather conditions, recruitment and retention of personnel, industrial relations issues and litigation.
Forward looking statements are based on the Company and its management's good faith assumptions relating to the financial, market, regulatory and other relevant environments that will exist and affect the Company's business and operations in the future. The Company does not give any assurance that the assumptions on which forward looking statements are based will prove to be correct, or that the Company's business or operations will not be affected in any material manner by these or other factors not foreseen or foreseeable by the Company or management or beyond the Company's control.
Although the Company attempts and has attempted to identify factors that would cause actual actions, events or results to differ materially from those disclosed in forward looking statements, there may be other factors that could cause actual results, performance, achievements or events not to be as anticipated, estimated or intended, and many events are beyond the reasonable control of the Company. Accordingly, readers are cautioned not to place undue reliance on forward looking statements. Forward looking statements in these materials speak only at the date of issue. Subject to any continuing obligations under applicable law or any relevant stock exchange listing rules, in providing this information the Company does not undertake any obligation to publicly update or revise any of the forward-looking statements or to advise of any change in events, conditions or circumstances on which any such statement is based.
Evolution Mining Limited Quarterly Report March 2020 | 19 |
CORPORATE INFORMATION
ABN 74 084 669 036
Board of Directors
Jake Klein | Executive Chairman |
Lawrie Conway | Finance Director and CFO |
Tommy McKeith | Lead Independent Director |
Jim Askew | Non-executive Director |
Jason Attew | Non-executive Director |
Andrea Hall | Non-executive Director |
Vicky Binns | Non-executive Director |
Peter Smith | Non-executive Director |
Company Secretary | |
Evan Elstein |
Investor enquiries
Bryan O'Hara
General Manager Investor Relations
Evolution Mining Limited
Tel: | +61 (0) 2 9696 2900 |
Media enquiries
Michael Vaughan
Fivemark Partners
Tel: | +61 (0) 422 602 720 |
Internet address
www.evolutionmining.com.au
Registered and principal office
Level 24, 175 Liverpool Street
Sydney NSW 2000
Tel: | +61 (0)2 9696 2900 |
Fax: | +61 (0)2 9696 2901 |
Share register
Link Market Services Limited
Locked Bag A14
Sydney South NSW 1235
Tel: | 1300 554 474 (within Australia) |
Tel: | +61 (0)2 8280 7111 |
Fax: | +61 (0)2 9287 0303 |
Email: | registrars@linkmarketservices.com.au |
Stock exchange listing
Evolution Mining Limited shares are listed on the Australian Securities Exchange under code EVN.
Issued share capital
At 31 March 2020 issued share capital was 1,704,404,430 ordinary shares.
Conference call
Jake Klein (Executive Chairman), Lawrie Conway (Finance Director and Chief Financial Officer), Bob Fulker (Chief Operating Officer), Glen Masterman (VP Discovery and Business Development) and Bryan O'Hara (General Manager Investor Relations) will host a conference call to discuss the quarterly results at 11.00am Sydney time on
Thursday 23 April 2020.
Shareholder - live audio stream
A live audio stream of the conference call will be available on Evolution's website www.evolutionmining.com.au. The audio stream is 'listen only'. The audio stream will also be uploaded to Evolution's website shortly after the conclusion of the call and can be accessed at any time.
Analysts and media - conference call details
Conference call details for analysts and media includes Q
- A participation. To be able to access the conference call please click on the link below. You will be required to pre- register which you will then be provided with a dial-in number, passcode and a unique access pin. This information will also be emailed to you as a calendar invite.
https://s1.c-conf.com/diamondpass/10004834-invite.html
To then join the conference, simply dial the number in the calendar invite and enter the passcode followed by your pin, and you will join the conference instantly. Please dial in five minutes before the conference starts and provide your name and the participant ID number.
Interactive Analyst CentreTM
Evolution's financial, operational, resources and reserves information is available to view via the Interactive Analyst CentreTM provided on our website www.evolutionmining.com.au under the Investors tab. This useful interactive platform allows users to chart and export Evolution's historical results for further analysis.
Evolution Mining Limited Quarterly Report March 2020 | 20 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Drill Hole Information Summary
Red Lake
Hole | Northing | Easting | Elevation | Hole | ||||||||||
Hole ID | Length | |||||||||||||
Type | NAD83 (m) | NAD83 (m) | (m) | |||||||||||
(m) | ||||||||||||||
43L502 | DDH | 5655579.70 | 448068.45 | -1538.71 | 118.9 | |||||||||
43L503 | DDH | 5655580 | 448068.5 | -1538.3 | 126.6 | |||||||||
43L503 | DDH | 5655580 | 448068.5 | -1538.3 | 126.6 | |||||||||
43L503 | DDH | 5655580 | 448068.5 | -1538.3 | 126.6 | |||||||||
44L911 | DD | 5655146.51 | 448356.26 | -1554.53 | 219.5 | |||||||||
C44141 | DD | 5658195.73 | 442570.58 | -962.54 | 218.4 | |||||||||
C44155 | DD | 5658033.17 | 442519.26 | -966.27 | 87.7 | |||||||||
C44156 | DD | 5658033.25 | 442519.26 | -966.90 | 120.4 | |||||||||
C44158 | DD | 5658033.04 | 442519.71 | -964.93 | 78.8 | |||||||||
C44143B | DD | 5658196.48 | 442570.87 | -962.80 | 243.8 | |||||||||
C44154 | DD | 5658033.26 | 442519.27 | -965.64 | 78 | |||||||||
C44159A | DD | 5658032.81 | 442519.94 | -966.44 | 97.5 | |||||||||
C44159A | ||||||||||||||
C44159A | ||||||||||||||
C44159A | ||||||||||||||
C44160 | DD | 5658032.66 | 442520.61 | -963.83 | 96.1 |
Dip | Azimuth | From | Interval1 | ETW | Au | |||
NAD83 | NAD83 | (m) | (m) | (m) | (g/t) | |||
-20.8 | 50.2 | 69.2 | 4.40 | 4.26 | 6.87 | |||
Including | 71.3 | 0.60 | 0.58 | 28.53 | ||||
83.2 | 0.90 | 0.82 | 5.38 | |||||
89.3 | 0.30 | 0.26 | 20.27 | |||||
94.1 | 3.30 | 3.04 | 4.77 | |||||
-5.4 | 50.5 | 88.3 | 0.80 | 0.69 | 8.002 | |||
-5.4 | 50.5 | 93.2 | 0.80 | 0.7 | 6.775 | |||
-5.4 | 50.5 | 98.4 | 3.80 | 3.25 | 6.853 | |||
-6.5 | 60.3 | 87.8 | 0.90 | 0.70 | 6.35 | |||
164.3 | 6.70 | 5.78 | 5.70 | |||||
173.9 | 0.60 | 0.48 | 13.58 | |||||
175.9 | 7.00 | 5.32 | 3.41 | |||||
-21.5 | 260.6 | 8.5 | 0.80 | 0.61 | 28.63 | |||
48 | 2.40 | 1.95 | 5.19 | |||||
Including | 50.3 | 0.10 | 0.12 | 32.71 | ||||
122.8 | 6.60 | 4.88 | 16.97 | |||||
Including | 125.7 | 0.80 | 0.55 | 130.52 | ||||
168.5 | 3.70 | 3.58 | 4.23 | |||||
-2.8 | 259 | 79.3 | 1.90 | 1.23 | 10.65 | |||
Including | 80.3 | 0.20 | 0.10 | 59.82 | ||||
-17.2 | 259.8 | 24.6 | 1.10 | 0.88 | 10.98 | |||
44.6 | 0.30 | 0.30 | 19.75 | |||||
22.4 | 247.2 | 45.4 | 0.30 | 0.26 | 22.23 | |||
64.9 | 4.40 | 3.18 | 7.32 | |||||
-20.5 | 284.7 | 31 | 0.20 | 0.15 | 955.53 | |||
169.2 | 1.50 | 0.98 | 5.73 | |||||
8.5 | 259.3 | 69.5 | 3.30 | 2.67 | 11.40 | |||
-8.9 | 247.4 | 23.3 | 4.00 | 3.06 | 4.07 | |||
87.3 | 3.80 | 2.97 | 7.75 | |||||
Including | 87.3 | 0.20 | 0.19 | 24.65 | ||||
Including | 90.3 | 0.20 | 0.19 | 27.97 | ||||
49.2 | 235.4 | 12.4 | 0.70 | 0.38 | 12.55 |
Evolution Mining Limited Quarterly Report March 2020 | 21 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Cowal
Hole | Northing | Easting | Elevation | Hole | Dip | Azimuth | From | Interval | ETW | Au | |||||||||||||||
Hole ID | Length | 1 | |||||||||||||||||||||||
Type | MGA (m) | MGA (m) | AHD (m) | MGA | MGA | (m) | (m) | (g/t) | |||||||||||||||||
(m) | (m) | ||||||||||||||||||||||||
1535DD453G | DD | 6,278,516 | 538,707 | 203.717 | 1382.67 | -60 | 280 | 955 | 21 | 16.8 | 2.93 | ||||||||||||||
including | 955 | 7 | 5.6 | 5.68 | |||||||||||||||||||||
1002 | 4 | 3.2 | 3.46 | ||||||||||||||||||||||
1048 | 8 | 6.4 | 2.59 | ||||||||||||||||||||||
1140 | 28 | 22.4 | 2.36 | ||||||||||||||||||||||
1222 | 5 | 4 | 9.19 | ||||||||||||||||||||||
including | 1225 | 1 | 0.8 | 38.7 | |||||||||||||||||||||
1535DD466A | DD | 6,278,038 | 538,797 | 204 | 1122.31 | -60 | 261 | 912 | 2 | 1.6 | 35.45 | ||||||||||||||
917 | 2.3 | 1.84 | 5.5 | ||||||||||||||||||||||
931.47 | 1.3 | 1.04 | 38.3 | ||||||||||||||||||||||
1114 | 1.3 | 1.04 | 8.9 | ||||||||||||||||||||||
1535DD466EXT | DD | 6,278,038 | 538,797 | 204 | 1047.35 | -60 | 261 | 831 | 4 | 3.2 | 3.16 | ||||||||||||||
855 | 2 | 1.6 | 58.96 | ||||||||||||||||||||||
1535DD544C | DD | 6,278,183 | 538,565 | 208.78 | 1665.72 | -57 | 309 | 1267 | 17 | 13.6 | 4.56 | ||||||||||||||
1535DD544D | DD | 6,278,183 | 538,565 | 208.78 | 925 | -57 | 309 | 693 | 7 | 5.6 | 4.04 | ||||||||||||||
871 | 12 | 9.6 | 2.58 | ||||||||||||||||||||||
1535DD545 | DD | 6,277,796 | 538,509 | 204.06 | 870.34 | -58 | 306 | 697 | 9 | 7.2 | 12.14 | ||||||||||||||
GRUD0071 | DD | 202.7 | 1.3 | 0.78 | 16.6 | ||||||||||||||||||||
GRUD0078 | DD | 6,278,781 | 538,071 | -28.39 | 218.34 | 29 | 61 | 101 | 10 | 8 | 2.91 | ||||||||||||||
113 | 3 | 2.4 | 3.21 | ||||||||||||||||||||||
183 | 1 | 0.8 | 12.5 | ||||||||||||||||||||||
GRUD0079 | DD | 6,278,781 | 538,070 | -29.34 | 260.56 | 15 | 42.5 | 129 | 9 | 7.2 | 5.43 | ||||||||||||||
GRUD0081 | DD | 6,279,012 | 538,008 | -65.75 | 242.54 | 15 | 62 | 157 | 1 | 0.6 | 49.5 | ||||||||||||||
168 | 7 | 4.2 | 3.5 | ||||||||||||||||||||||
GRUD0083 | DD | 6,279,012 | 538,008 | -66.92 | 215.81 | -12 | 86 | 155.8 | 2.2 | 1.32 | 5.05 | ||||||||||||||
161 | 7.24 | 4.34 | 2.25 | ||||||||||||||||||||||
GRUD0084 | DD | 6,279,012 | 538,008 | -65.4 | 305.07 | 23 | 77 | 157 | 4 | 2.4 | 12.03 | ||||||||||||||
including | 158 | 1 | 0.6 | 45.4 | |||||||||||||||||||||
GRUD0086 | DD | 6,278,780 | 538,072 | -29.41 | 190.25 | 10.5 | 88 | 87 | 6.1 | 3.66 | 3.86 | ||||||||||||||
102 | 26 | 15.6 | 3.03 | ||||||||||||||||||||||
GRUD0087 | DD | 6,278,781 | 538,070 | -30.7 | 230 | -20 | 58 | 139 | 2 | 1.2 | 8.17 | ||||||||||||||
GRUD0088 | DD | 6,278,887 | 538,041 | -47.87 | 197.83 | -12 | 88 | 97 | 4 | 2.4 | 3 | ||||||||||||||
GRUD0090 | DD | 6,278,889 | 538,041 | -47.63 | 340.02 | 6 | 74 | 296 | 2 | 1.2 | 7.02 | ||||||||||||||
GRUD0091 | DD | 6,278,890 | 538,040 | -47.84 | 224.51 | -4 | 58 | 105 | 1 | 0.8 | 27.9 | ||||||||||||||
113 | 9 | 7.2 | 3.17 | ||||||||||||||||||||||
GRUD0093 | DD | 6,278,889 | 538,041 | -48.68 | 239.76 | -29.5 | 81 | 11 | 1 | 0.8 | 14.7 | ||||||||||||||
148 | 12 | 9.6 | 2.18 | ||||||||||||||||||||||
GRUD0095 | DD | 6,278,318 | 538,447 | 63.14 | 530 | -30 | 314 | 366 | 29 | 23.2 | 2.79 | ||||||||||||||
GRUD0097 | DD | 6,278,318 | 538,448 | 63.22 | 494.88 | -18.5 | 318 | 243 | 3 | 2.4 | 6.85 | ||||||||||||||
375 | 7 | 5.6 | 8.19 | ||||||||||||||||||||||
GRUD0098 | DD | 6,278,259 | 538,444 | 62.53 | 650 | -54 | 285.5 | 350 | 3 | 2.4 | 4.65 | ||||||||||||||
358 | 10 | 8 | 6.52 | ||||||||||||||||||||||
409 | 8 | 6.4 | 7.02 | ||||||||||||||||||||||
518 | 9 | 7.2 | 13.14 | ||||||||||||||||||||||
GRUD0099 | DD | 6,278,259 | 538,444 | 62.53 | 530 | -49 | 304 | 342 | 16 | 12.8 | 4.2 | ||||||||||||||
457 | 18 | 14.4 | 3.26 | ||||||||||||||||||||||
GRUD0100 | DD | 6,278,259 | 538,444 | 62 | 545.03 | -46 | 302 | 274 | 15 | 12 | 3.75 | ||||||||||||||
327 | 3 | 2.4 | 14.66 | ||||||||||||||||||||||
335 | 1 | 0.8 | 27.5 | ||||||||||||||||||||||
398 | 3 | 2.4 | 3.13 | ||||||||||||||||||||||
430 | 3 | 2.4 | 6.58 | ||||||||||||||||||||||
Evolution Mining Limited Quarterly Report March 2020 | 22 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Hole | Northing | Easting | Elevation | Hole | Dip | Azimuth | From | Interval | ETW | Au | ||||||||||||||
Hole ID | Length | 1 | ||||||||||||||||||||||
Type | MGA (m) | MGA (m) | AHD (m) | MGA | MGA | (m) | (m) | (g/t) | ||||||||||||||||
(m) | (m) | |||||||||||||||||||||||
465 | 4 | 3.2 | 4.66 | |||||||||||||||||||||
GRUD0101 | DD | 6,278,318 | 538,448 | 63 | 599.8 | -36 | 310 | 336 | 17 | 13.6 | 2.89 | |||||||||||||
376 | 10 | 8 | 6.31 | |||||||||||||||||||||
455 | 2 | 1.6 | 8.5 | |||||||||||||||||||||
565 | 3 | 2.4 | 5.13 | |||||||||||||||||||||
GRUD0108 | DD | 6,278,890 | 538,040 | -49.02 | 330.03 | -52 | 58 | 127 | 7 | 5.6 | 5.05 | |||||||||||||
156 | 4 | 3.2 | 3.41 | |||||||||||||||||||||
168 | 1 | 0.8 | 13.7 | |||||||||||||||||||||
217 | 6 | 4.8 | 3.74 | |||||||||||||||||||||
246 | 22 | 17.6 | 4.3 | |||||||||||||||||||||
321 | 4 | 3.2 | 3.95 | |||||||||||||||||||||
GRUD0109 | DD | 6,278,259 | 538,444 | 62.53 | 570 | -42 | 309.5 | 320 | 1 | 0.8 | 18.6 | |||||||||||||
346 | 4 | 3.2 | 3.73 | |||||||||||||||||||||
409 | 12 | 9.6 | 10.8 | |||||||||||||||||||||
427 | 2 | 1.6 | 5.35 | |||||||||||||||||||||
467 | 1 | 0.8 | 24.5 | |||||||||||||||||||||
534 | 2 | 1.6 | 5.32 | |||||||||||||||||||||
GRUD0110 | DD | 6,278,259 | 538,444 | 62 | 480 | -37 | 310 | 255 | 7 | 5.6 | 10.52 | |||||||||||||
GRUD0115 | DD | 6,278,805 | 538,393 | -7 | 461.82 | -26 | 313 | 381 | 7 | 5.6 | 3.52 | |||||||||||||
GRUD0116 | DD | 6,278,805 | 538,393 | -7 | 596.7 | -22 | 324 | 220 | 1 | 0.8 | 15.08 | |||||||||||||
252 | 23 | 18.4 | 5.12 | |||||||||||||||||||||
including | 262 | 9 | 7.2 | 11.13 | ||||||||||||||||||||
517 | 8 | 6.4 | 3.96 | |||||||||||||||||||||
548 | 34 | 27.2 | 3.07 | |||||||||||||||||||||
including | 552 | 15 | 12 | 4.44 | ||||||||||||||||||||
GRUD0117 | DD | 6,278,805 | 538,393 | -7 | 650.88 | -31 | 319 | 407 | 5 | 4 | 2.77 | |||||||||||||
512 | 18 | 14.4 | 2.64 | |||||||||||||||||||||
including | 518 | 3 | 2.4 | 8.81 | ||||||||||||||||||||
543 | 5 | 4 | 4.86 | |||||||||||||||||||||
including | 544 | 1 | 0.8 | 19.4 | ||||||||||||||||||||
GRUD0118 | DD | 6,278,259 | 538,444 | 62 | 535.42 | -36.5 | 313 | 280 | 1 | 0.8 | 12.9 | |||||||||||||
283.94 | 4.06 | 3.25 | 9.58 | |||||||||||||||||||||
378 | 1 | 0.8 | 21.4 | |||||||||||||||||||||
406 | 4 | 3.2 | 3.47 | |||||||||||||||||||||
452 | 6 | 4.8 | 2.55 | |||||||||||||||||||||
475 | 8 | 6.4 | 8.49 | |||||||||||||||||||||
251 | 3 | 2.4 | 3.77 | |||||||||||||||||||||
367 | 5 | 4 | 3.4 | |||||||||||||||||||||
GRUD0120 | DD | 6,278,816 | 538,208 | -10 | 418.72 | -48 | 342 | 15 | 1.1 | 0.88 | 23.1 | |||||||||||||
40 | 5 | 4 | 28.99 | |||||||||||||||||||||
including | 42 | 1 | 0.8 | 139 | ||||||||||||||||||||
70 | 9 | 7.2 | 3.88 | |||||||||||||||||||||
including | 75 | 3 | 2.4 | 8.69 | ||||||||||||||||||||
122 | 20 | 16 | 2.61 | |||||||||||||||||||||
405 | 5.1 | 4.08 | 4.26 | |||||||||||||||||||||
GRUD0121 | DD | 6,278,318 | 538,448 | 63 | 353.52 | -36.5 | 303 | 235 | 1 | 0.8 | 27.6 | |||||||||||||
247.94 | 2.06 | 1.65 | 34.99 | |||||||||||||||||||||
GRUD0122 | DD | 6,278,273 | 538,389 | 61 | 236 | -52.5 | 296.5 | 189 | 7 | 5.25 | 10.56 | |||||||||||||
including | 191.9 | 2.1 | 1.5 | 31.65 | ||||||||||||||||||||
GRUD0123 | DD | 6,278,273 | 538,389 | 61 | 279.77 | -38.5 | 310.5 | 266 | 1 | 0.75 | 19.03 | |||||||||||||
GRUD0124 | DD | 6,278,273 | 538,389 | 61 | 221.7 | -26 | 317 | 125 | 0.8 | 0.6 | 12.84 | |||||||||||||
130 | 8 | 6 | 2.61 |
Evolution Mining Limited Quarterly Report March 2020 | 23 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Hole | Northing | Easting | Elevation | Hole | Dip | Azimuth | From | Interval | ETW | Au | ||||||||||||||
Hole ID | Length | 1 | ||||||||||||||||||||||
Type | MGA (m) | MGA (m) | AHD (m) | MGA | MGA | (m) | (m) | (g/t) | ||||||||||||||||
(m) | (m) | |||||||||||||||||||||||
150 | 9 | 6.75 | 4.22 | |||||||||||||||||||||
202 | 3 | 2.25 | 7.48 | |||||||||||||||||||||
GRUD0125 | DD | 6,278,753 | 538,391 | -9 | 833.59 | -40.5 | 316.5 | 17 | 3 | 2.4 | 3.73 | |||||||||||||
GRUD0126 | DD | 6,278,273 | 538,389 | 61 | 510.41 | -53.5 | 306 | 239 | 16 | 12 | 3.19 | |||||||||||||
including | 247 | 6.08 | 4.56 | 6.12 | ||||||||||||||||||||
305 | 1 | 0.75 | 40.9 | |||||||||||||||||||||
GRUD0127 | DD | 6,278,805 | 538,393 | -7 | 791.68 | -36 | 320 | 707 | 4 | 3.2 | 4.83 | |||||||||||||
770 | 13 | 10.4 | 3.87 | |||||||||||||||||||||
including | 777 | 4 | 3.2 | 10.28 | ||||||||||||||||||||
GRUD0128 | DD | 6,278,753 | 538,391 | -9 | 1000 | -46 | 321 | 329 | 2 | 1.6 | 6.7 | |||||||||||||
338.24 | 3.06 | 2.45 | 10.21 | |||||||||||||||||||||
440 | 1 | 0.8 | 72.26 | |||||||||||||||||||||
737 | 5 | 4 | 2.57 | |||||||||||||||||||||
812 | 2.3 | 1.84 | 6.32 | |||||||||||||||||||||
914 | 4.12 | 3.3 | 3.21 | |||||||||||||||||||||
GRUD0130 | DD | 6,278,273 | 538,389 | 61 | 280.03 | -39 | 319 | 160 | 13 | 9.75 | 2.97 | |||||||||||||
GRUD0131 | DD | 6,278,805 | 538,393 | -7 | 599.39 | -35 | 313 | 373 | 1 | 0.8 | 16.4 | |||||||||||||
387 | 4 | 3.2 | 2.5 | |||||||||||||||||||||
406 | 5 | 4 | 2.66 | |||||||||||||||||||||
437 | 26 | 20.8 | 2.51 | |||||||||||||||||||||
including | 450 | 12 | 9.6 | 4.13 | ||||||||||||||||||||
524 | 1 | 0.8 | 13.4 | |||||||||||||||||||||
538 | 1 | 0.8 | 11.3 | |||||||||||||||||||||
554 | 5 | 4 | 13.6 | |||||||||||||||||||||
GRUD0132 | DD | 6,278,273 | 538,389 | 61 | 260.15 | -45.5 | 307 | 157 | 3 | 2.25 | 8.04 | |||||||||||||
235 | 4 | 3 | 2.78 | |||||||||||||||||||||
GRUD0133 | DD | 6,278,273 | 538,389 | 61 | 266.44 | -57 | 287 | 211 | 4 | 3 | 2.88 | |||||||||||||
219 | 3 | 2.25 | 2.88 | |||||||||||||||||||||
240 | 2 | 1.5 | 6.47 | |||||||||||||||||||||
247 | 2 | 1.5 | 12.7 | |||||||||||||||||||||
GRUD0137 | DD | 6,278,259 | 538,444 | 62 | 557.48 | -53.5 | 280 | 290 | 16 | 12.8 | 2.58 | |||||||||||||
317 | 34 | 27.2 | 2.72 | |||||||||||||||||||||
including | 329 | 6 | 4.8 | 7.05 | ||||||||||||||||||||
390 | 9 | 7.2 | 2.52 | |||||||||||||||||||||
404 | 8 | 6.4 | 4.43 | |||||||||||||||||||||
425 | 19 | 15.2 | 2.42 | |||||||||||||||||||||
including | 437 | 7 | 5.6 | 3.81 | ||||||||||||||||||||
454 | 13 | 10.4 | 2.46 | |||||||||||||||||||||
537 | 7 | 5.6 | 3.68 | |||||||||||||||||||||
GRUD0138 | DD | 6,278,273 | 538,389 | 61 | 215.2 | -21 | 323 | 58 | 3 | 2.3 | 5.52 | |||||||||||||
158 | 8 | 6 | 6.4 | |||||||||||||||||||||
including | 161 | 1 | 0.75 | 33.4 | ||||||||||||||||||||
208 | 3 | 2.25 | 4.51 |
Note: Drillholes with the prefix GRUD denote that they are underground drill holes
1. Reported intervals provided in this report are downhole widths as true widths are not currently known. An estimated true width (etw) is provided where available
Evolution Mining Limited Quarterly Report March 2020 | 24 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Mungari
Hole ID | Hole | |||
Type | ||||
PICD030 DD
PICD031 DD
PICD031 DD
EVDD0072DD
EVDD0081DD
EVDD0082ADD
EVDD0083DD
EVDD0083DD
EVDD0091ADD
EVDD0091ADD
EVDD0091ADD
EVDD0092DD
EVDD0092DD
EVDD0092DD
EVDD0092DD
EVDD0093DD
EVDD0095DD
EVDD0096DD
EVDD0103DD
EVDD0103DD
EVDD0108DD
EVDD0109DD
EVDD0109DD
EVDD0110DD
EVDD0112DD
EVDD0113DD
EVDD0114DD
EVDD0114DD
EVDD0114DD
EVDD0114DD
EVDD0116DD
EVDD0116DD
EVDD0116DD
EVDD0121DD
EVDD0128DD
EVDD0078DD
EVDD0084DD
EVDD0086DD
EVDD0087DD
EVDD0088DD
EVDD0090DD
EVDD0097DD
EVDD0098DD
EVDD0099DD
EVDD0101DD
EVDD0104DD
EVDD0106DD
EVDD0107DD
EVDD0111DD
FLRD378 DD
EVDD0080DD
Northing MGA | Elevation | Hole | Dip | Azimuth | From | Interval1 | ETW | Au | |
Easting MGA (m) | Length | ||||||||
(m) | AHD (m) | MGA | MGA | (m) | (m) | (m) | (g/t) | ||
(m) | |||||||||
311645.84 | 6610200.34 | 417.97 | 201.80 | -59.84 | 269.66 | 108.00 | 4.00 | 3.87 | 1.65 |
311673.01 | 6610279.82 | 416.82 | 241.00 | -59.91 | 269.19 | 140.00 | 1.00 | 0.97 | 31.20 |
311673.01 | 6610279.82 | 416.82 | 241.00 | -59.91 | 269.19 | 163.00 | 9.00 | 8.70 | 1.96 |
6595472.47 | 333845.53 | 337.81 | 240.00 | -58.45 | 45.03 | 197.70 | 0.38 | 0.33 | 37.24 |
6595421.79 | 333870.16 | 338.61 | 255.00 | -55.00 | 46.00 | 199.10 | 0.25 | 0.23 | 11.70 |
6595412.98 | 333861.68 | 338.43 | 280.20 | -55.00 | 46.00 | 215.89 | 0.24 | 0.22 | 102.88 |
6595563.00 | 333844.90 | 337.73 | 170.13 | -64.70 | 43.80 | 125.40 | 0.60 | 0.49 | 9.58 |
6595563.00 | 333844.90 | 337.73 | 170.13 | -64.70 | 43.80 | 100.10 | 0.90 | 0.74 | 1.82 |
6595417.00 | 333872.00 | 338.00 | 224.80 | -40.00 | 63.00 | 197.00 | 1.00 | 0.91 | 10.10 |
6595417.00 | 333872.00 | 338.00 | 224.80 | -40.00 | 63.00 | 178.28 | 0.42 | 0.38 | 2.49 |
6595417.00 | 333872.00 | 338.00 | 224.80 | -40.00 | 63.00 | 205.51 | 0.32 | 0.29 | 2.39 |
6595299.32 | 333915.69 | 338.69 | 235.05 | -45.36 | 45.83 | 218.80 | 0.21 | 0.20 | 29.13 |
6595299.32 | 333915.69 | 338.69 | 235.05 | -45.36 | 45.83 | 185.13 | 0.87 | 0.83 | 3.71 |
6595299.32 | 333915.69 | 338.69 | 235.05 | -45.36 | 45.83 | 191.00 | 1.00 | 0.96 | 3.09 |
6595299.32 | 333915.69 | 338.69 | 235.05 | -45.36 | 45.83 | 207.33 | 0.67 | 0.64 | 3.64 |
6595368.32 | 333889.18 | 337.79 | 245.00 | -49.00 | 39.32 | 208.50 | 0.20 | 0.19 | 6.86 |
6595381.51 | 333888.64 | 337.63 | 250.02 | -59.00 | 46.00 | 204.60 | 1.29 | 1.12 | 4.47 |
6595369.18 | 333876.54 | 338.58 | 265.20 | -57.50 | 45.39 | 225.10 | 0.20 | 0.18 | 2.03 |
6595398.84 | 333758.30 | 343.83 | 330.03 | -59.00 | 48.00 | 259.52 | 1.00 | 0.87 | 2.63 |
6595398.84 | 333758.30 | 343.83 | 330.03 | -58.00 | 48.00 | 293.97 | 1.56 | 1.36 | 26.90 |
6595273.95 | 333892.12 | 342.29 | 323.73 | -61.22 | 50.31 | 290.70 | 1.30 | 1.09 | 3.18 |
6595224.06 | 333840.56 | 345.04 | 425.32 | -64.75 | 46.22 | 421.10 | 0.30 | 0.25 | 3.67 |
6595224.06 | 333840.56 | 345.04 | 425.32 | -64.75 | 46.22 | 395.50 | 0.40 | 0.33 | 2.65 |
6595535.36 | 333843.84 | 338.10 | 170.10 | -62.00 | 42.00 | 146.28 | 1.22 | 1.03 | 119.95 |
6595371.31 | 333761.98 | 343.75 | 331.20 | -56.00 | 48.50 | 311.40 | 0.30 | 0.27 | 32.93 |
6595342.30 | 333776.47 | 343.65 | 375.00 | -61.00 | 53.00 | 342.30 | 0.60 | 0.50 | 2.62 |
6595436.87 | 333745.71 | 343.43 | 310.00 | -58.00 | 48.00 | 246.00 | 0.25 | 0.22 | 1.88 |
6595436.87 | 333745.71 | 343.43 | 310.00 | -58.00 | 48.00 | 246.53 | 0.47 | 0.41 | 1.94 |
6595436.87 | 333745.71 | 343.43 | 310.00 | -57.60 | 48.54 | 261.00 | 2.00 | 1.75 | 3.70 |
6595436.87 | 333745.71 | 343.43 | 310.00 | -57.60 | 48.54 | 265.00 | 0.50 | 0.44 | 2.60 |
6595462.51 | 333735.77 | 343.44 | 287.30 | -55.00 | 53.00 | 240.00 | 2.00 | 1.77 | 2.27 |
6595462.51 | 333735.77 | 343.44 | 287.30 | -55.00 | 53.00 | 249.50 | 0.50 | 0.44 | 2.18 |
6595462.51 | 333735.77 | 343.44 | 287.30 | -55.00 | 53.00 | 250.50 | 1.00 | 0.88 | 3.95 |
6595410.27 | 333763.27 | 343.39 | 310.30 | -54.00 | 47.00 | 279.90 | 0.40 | 0.36 | 3.37 |
6595298.56 | 333798.51 | 344.26 | 407.00 | -61.00 | 47.00 | 369.00 | 1.30 | 1.11 | 5.97 |
6595579.86 | 333829.47 | 337.74 | 185.10 | -69.96 | 47.46 | No significant intercept |
6595637.79 | 333827.85 | 339.46 | 111.10 | -40.00 | 45.07 | No significant intercept |
6595604.60 | 333795.70 | 339.13 | 140.90 | -41.00 | 44.31 | No significant intercept |
6595589.46 | 333778.91 | 339.83 | 155.00 | -41.00 | 44.22 | No significant intercept |
6595595.50 | 333843.33 | 338.17 | 116.00 | -45.00 | 45.00 | No significant intercept |
6595508.47 | 333883.92 | 337.73 | 165.00 | -43.00 | 75.00 | No significant intercept |
6595358.80 | 333863.94 | 339.74 | 285.30 | -58.74 | 45.00 | No significant intercept |
6595706.52 | 333824.95 | 339.99 | 90.03 | -52.34 | 45.00 | No significant intercept |
6595676.45 | 333794.52 | 339.34 | 125.24 | -58.71 | 45.00 | No significant intercept |
6595482.53 | 333730.77 | 342.65 | 298.14 | -62.10 | 45.00 | No significant intercept |
6595301.87 | 333702.06 | 342.46 | 440.00 | -59.45 | 47.00 | No significant intercept |
6595300.91 | 333805.48 | 344.17 | 390.00 | -61.90 | 45.00 | No significant intercept |
6595237.76 | 333739.95 | 343.49 | 448.38 | -58.46 | 45.00 | No significant intercept |
6595617.43 | 333812.25 | 338.23 | 130.30 | -65.87 | 45.00 | No significant intercept |
6595699.79 | 334164.38 | 234.50 | 333.40 | -21.90 | 229.20 | No significant intercept |
6595425.56 | 333873.45 | 338.71 | 250.00 | -53.00 | 42.44 | No significant intercept |
Evolution Mining Limited Quarterly Report March 2020 | 25 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Hole | Northing MGA | Elevation | Hole | Dip | Azimuth | From | Interval1 | ETW | Au | |||||||||||||||
Hole ID | Easting MGA (m) | Length | ||||||||||||||||||||||
Type | (m) | AHD (m) | MGA | MGA | (m) | (m) | (m) | (g/t) | ||||||||||||||||
(m) | ||||||||||||||||||||||||
EVDD0085 | DD | 6595619.05 | 333811.97 | 338.72 | 124.00 | -40.32 | 42.75 | No significant intercept | ||||||||||||||||
EVDD0089 | DD | 6595509.46 | 333881.66 | 337.53 | 159.30 | -41.20 | 53.02 | No significant intercept | ||||||||||||||||
EVDD0094 | DD | 6595398.59 | 333882.70 | 337.87 | 233.70 | -57.40 | 50.53 | No significant intercept | ||||||||||||||||
EVDD0117 | DD | 6595444.00 | 333752.00 | 344.00 | 314.00 | -66.39 | 41.00 | Awaiting results | ||||||||||||||||
EVDD0118 | DD | 6595466.00 | 333747.00 | 343.00 | 293.10 | -64.04 | 50.00 | Awaiting results | ||||||||||||||||
EVDD0122 | DD | 6595381.00 | 333768.00 | 343.00 | 367.00 | -68.76 | 35.50 | Awaiting results | ||||||||||||||||
EVDD0123 | DD | 6595387.00 | 333775.00 | 343.00 | 327.00 | -58.59 | 45.00 | Awaiting results | ||||||||||||||||
EVDD0125 | DD | 6595329.00 | 333859.00 | 343.00 | 305.00 | -58.00 | 38.00 | Awaiting results | ||||||||||||||||
EVDD0127 | DD | 6595368.26 | 333774.30 | 343.26 | 372.10 | -68.16 | 45.00 | Awaiting results | ||||||||||||||||
EVDD0129 | DD | 6595289.11 | 333692.04 | 342.64 | 465.40 | -61.78 | 45.00 | Awaiting results | ||||||||||||||||
1. Reported intervals provided in this report are downhole widths as true widths are not currently known. An estimated true width (etw) is provided where available
Evolution Mining Limited Quarterly Report March 2020 | 26 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Red Lake
Red Lake Section 1 Sampling Techniques and Data
Red Lake Operations Section 1 Sampling Techniques and Data
Criteria
Sampling techniques
Drilling techniques
Drill sample recovery
Explanation
- Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as downhole gamma sondes, handheldXRF instruments, etc). These examples should not be taken as limiting the broad meaning ofsampling.
- Include reference to measures taken to ensure sample representation and the appropriate calibration of any measurement tools or systems used.
- Aspects of the determination of mineralisation that are material to thePublic Report.
- In cases where 'industry standard' work has been completed this wouldbe relatively simple (e.g. 'reverse circulation drilling was used to obtain 1m samples from which 3 kg was pulverised to produce a 30 g chargefor fire assay'). In other cases, more explanation may be required, such as where there is coarse gold that has inherent sampling problems, or unusual commodities/mineralisationtypes (e.g. submarine nodules).
- Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc.) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other type, whether core is oriented and if so, by whatmethod, etc.).
- Method of recording and assessing core and chip sample recoveries andresults assessed.
- Measures taken to maximise sample recovery and ensure representativenature of the samples.
- Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain offine/coarse material.
Commentary
- Sampling of gold mineralisation at Red Lake Operation was undertaken using diamond core (surface and underground).
- All drill samples were logged prior to sampling. Diamond drill core was sampled to lithological, alteration and mineralisation related contacts. Sampling was carried out according to Red Lake Operations protocols and QAQC procedures which comply with industry best practice. All drill-hole collars were surveyed using a total station theodolite or total GPS.
- The sampling and assaying methods are appropriate for the orogenic mineralised system and are representative for the mineralisation style. The sampling and assaying suitability was validated using Red Lake Operations QAQC protocol and no instruments or tools requiring calibration were used as part of the sampling process.
- Diamond drill core sample intervals were based on geology to ensure a representative sample, with lengths ranging from 0.15 to 0.9m. Diamond drilling was half core sampled. All diamond core samples were dried, crushed and pulverised (total preparation) to produce a 50g charge for fire assay of Au. A suite of multi elements are determined using four-acid digest with ICP/MS and/or an ICP/AES finish for some sample intervals.
- Drilling on site is conducted using diamond drill rigs, the core is extracted using a standard tube and core diameter is either BQTK (40.7mm) or NQ (47.6mm) in size,
- All exploration drill core is orientated using the Tru-Core device.
- Percentage of drill core recovery is not recorded at this time on site. All core is oriented and marked up at 1-foot intervals, intervals are compared to drillers depth.
Evolution Mining Limited Quarterly Report March 2020 | 27 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Red Lake Operations Section 1 Sampling Techniques and Data
Criteria
Logging
Sub-sampling techniques and sample preparation
Explanation
-
Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support
appropriate Mineral Resource estimation, mining studies and metallurgical studies. - Whether logging is qualitative or quantitative in nature. Core (or costean,channel etc.) photography.
The total length and percentage of therelevant intersections logged. - If core, whether cut or sawn andwhether quarter, half or all core taken.
- If non-core, whether riffled, tube sampled, rotary split, etc and whethersampled wet or dry.
- For all sample types, the nature, quality and appropriateness of thesample preparation technique.
- Quality control procedures adopted for all sub-sampling stages to maximiserepresentivity of samples.
-
Measures taken to ensure that the sampling is representative of the in-situ material collected, including for
instance results for field duplicate/second-half sampling. - Whether sample sizes are appropriate to the grain size of thematerial being sampled.
Commentary
• All logging is both qualitative and quantitative in nature |
recording features such as structural data, lithology, |
mineralogy, alteration, mineralisation types, vein density, colour |
etc. All holes are photographed wet. |
• All diamond holes were logged in entirely from collar to end of |
hole. |
• All drill core once logged is digitally photographed. The |
photographs capture all data presented on the core. |
• Diamond core drilled was half core sampled and the remaining |
half was retained. |
• Core is cut to preserve the bottom of hole orientation line, in |
some instance core may be quarter cut and send for analysis. |
• Sample preparation of diamond samples was undertaken by |
external laboratories according to the sample preparation and |
assaying protocol established to maximise the representation of |
the Red Lake Operations mineralisation. Laboratories |
performance was monitored as part of Red Lake Operations |
QAQC procedure. Laboratory inspections were undertaken to |
monitor the laboratories compliance to the Red Lake Operations |
sampling and sample preparation protocol. |
• The sample and size (1.5kg to 4kg) relative to the particle size |
(>90% passing 75um) of the material sampled is a commonly |
utilised practice for effective sample representation for gold |
deposits within the Orogenic Gold deposits of the Superior |
Craton Canada. |
• Quality control procedures adopted to maximise sample |
representation for all sub-sampling stages include the collection |
of field and laboratory duplicates and the insertion of certified |
reference material as assay standards (1 in 20) and the |
insertion of blank samples (1 in 20) or at the geologist's |
discretion. Coarse blank material is routinely submitted for |
assay and is inserted into each mineralised zone where |
possible and always after a sample identified as having visible |
gold. The quality control performance was monitored as part of |
Red Lake Operations QAQC procedure. |
• The sample preparation has been conducted by commercial |
laboratories. All samples are oven dried (60°C), jaw crushed to |
90% passing <2mm and riffle split to a maximum sample weight |
of 1kg as required. The primary sample is then pulverised in a |
one stage process, using a LM2 pulveriser, to a particle size of |
>90% passing 75um. Approximately 250g of the primary sample |
is extracted by spatula to a numbered paper pulp bag that is |
used for a 50g fire assay charge. The pulp is retained, and the |
bulk residue is disposed of after four months. |
• Measures taken to ensure sample representation include the |
collection of field duplicates during diamond core sampling |
drilling at the geologist's discretion and within the ore zone. |
Duplicate samples for diamond core are collected during the |
sample preparation crushing and pulverisation stage. A |
comparison of the duplicate sample vs. the primary sample |
assay result was undertaken as part of Red Lake Operations |
QAQC protocol. It is considered that all sub-sampling and lab |
preparations are consistent with other laboratories in Canada |
and are satisfactory for the intended purpose. |
• The sample sizes are considered appropriate and in line with |
industry standards. |
• The sampling preparation and assaying protocol used at Red |
Quality of assay data | • | The | nature, | quality | and | |
and laboratory tests | appropriateness of the | assaying | and | |||
laboratory | procedures | used | and | |||
whether the technique is considered | ||||||
partial or total. | ||||||
Lake Operations was developed to ensure the quality and |
suitability of the assaying and laboratory procedures relative to |
the mineralisation types. |
• No geophysical tools or other remote sensing instruments were |
utilised for reporting or interpretation of gold mineralisation. |
• Fire assay is designed to measure the total gold within a |
Evolution Mining Limited Quarterly Report March 2020 | 28 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Red Lake Operations Section 1 Sampling Techniques and Data
Criteria
Verification of sampling and assaying
Location of data points
Data spacing and distribution
Orientation of data in relation to geological structure
Explanation | Commentary | ||||||||||||||||||||||||||
• For geophysical tools, spectrometers, | sample. Fire assay has been confirmed as a suitable technique | ||||||||||||||||||||||||||
handheld XRF instruments etc. the | for orogenic type mineralisation. It has been extensively used | ||||||||||||||||||||||||||
parameters used in determining the | throughout the North Western Ontario region. Screen fire assay | ||||||||||||||||||||||||||
analysis including instrument make and | • | have also been used to validate the fire assay techniques. | |||||||||||||||||||||||||
model, | reading | times, | calibrations | Quality control samples were routinely inserted into the | |||||||||||||||||||||||
factors applied and their derivation, etc. | sampling sequence and also inserted at the discretion of the | ||||||||||||||||||||||||||
• Nature of quality control procedures | geologist | either | inside or around | the | expected zones | of | |||||||||||||||||||||
mineralisation. The intent of the procedure for reviewing the | |||||||||||||||||||||||||||
adopted | (eg | standards, | blanks, | ||||||||||||||||||||||||
performance | of | certified standard | reference | material | is | to | |||||||||||||||||||||
duplicates, external laboratory checks) | |||||||||||||||||||||||||||
examine for | any | erroneous results | (a | result | outside | of | the | ||||||||||||||||||||
and | whether | acceptable | levels | of | |||||||||||||||||||||||
expected statistically derived tolerance limits) and to validate if | |||||||||||||||||||||||||||
accuracy | (i.e. | lack | of | bias) | and | ||||||||||||||||||||||
required; the acceptable levels of accuracy and precision for all | |||||||||||||||||||||||||||
precision have been established. | |||||||||||||||||||||||||||
stages of the sampling and analytical process. Typically, | |||||||||||||||||||||||||||
batches which fail quality control checks are re-analysed. | |||||||||||||||||||||||||||
• | The | verification | of | significant | • | Independent | internal | or external | verification | of significant | |||||||||||||||||
intercepts is not routinely completed. The quality control / quality | |||||||||||||||||||||||||||
intersections by either independent or | |||||||||||||||||||||||||||
assurance | (QAQC) | process ensures | the | intercepts | are | ||||||||||||||||||||||
alternative company personnel. | |||||||||||||||||||||||||||
representative for the orogenic gold systems. Half core and | |||||||||||||||||||||||||||
• The use of twinned holes. | sample pulps are retained at Red Lake Operations for two years | ||||||||||||||||||||||||||
if further verification is required. | |||||||||||||||||||||||||||
• Documentation of primary data, data | • | The twinning of holes is not a common practice undertaken at | |||||||||||||||||||||||||
entry procedures, data verification and | Red Lake Operations. The face sample and drill hole data with | ||||||||||||||||||||||||||
data storage (physical and electronic) | the mill reconciliation data is of sufficient density to validate | ||||||||||||||||||||||||||
protocols. | neighbouring samples. Data which is inconsistent with the | ||||||||||||||||||||||||||
• Discuss any adjustment to assay data | known geology undergoes further | verification | to ensure | its | |||||||||||||||||||||||
quality. | |||||||||||||||||||||||||||
• All sample and assay information is stored utilising the acQuire | |||||||||||||||||||||||||||
database software system. Data undergoes QAQC validation | |||||||||||||||||||||||||||
prior to being accepted and loaded into the database. Assay | |||||||||||||||||||||||||||
results are merged when received electronically from the | |||||||||||||||||||||||||||
laboratory. The geologist reviews the database checking for the | |||||||||||||||||||||||||||
correct merging of results and that all data has been received | |||||||||||||||||||||||||||
and entered. Any adjustments to this data are recorded | |||||||||||||||||||||||||||
permanently in the database. Historical paper records (where | |||||||||||||||||||||||||||
available) are retained in the exploration and mining offices. | |||||||||||||||||||||||||||
• No adjustments or calibrations have been made to the final | |||||||||||||||||||||||||||
assay data reported by the laboratory. | |||||||||||||||||||||||||||
• Accuracy and quality of surveys used | • Drill hole collar positions are surveyed by the site-based survey | ||||||||||||||||||||||||||
department or contract surveyors (utilising a differential GPS or | |||||||||||||||||||||||||||
to locate drillholes (collar and downhole | |||||||||||||||||||||||||||
conventional surveying techniques, with reference to a known | |||||||||||||||||||||||||||
surveys), trenches, mine workings and | |||||||||||||||||||||||||||
base station) with a precision of less than 0.2m variability. | |||||||||||||||||||||||||||
other | locations | used | in | Mineral | |||||||||||||||||||||||
• All drill holes at Red Lake Operations have been surveyed for | |||||||||||||||||||||||||||
Resource estimation. | |||||||||||||||||||||||||||
easting, northing and reduced level. Recent data is collected | |||||||||||||||||||||||||||
• Specification of the grid system used. | and stored in RLO Mine Grid. | ||||||||||||||||||||||||||
• Topographic control was generated from aerial surveys and | |||||||||||||||||||||||||||
• Quality and adequacy of topographic | |||||||||||||||||||||||||||
detailed Lidar surveys. | |||||||||||||||||||||||||||
control. | |||||||||||||||||||||||||||
• | Data | spacing | for | reporting | of | • | The nominal drill spacing for Exploration drilling is 22m x 42m | ||||||||||||||||||||
Exploration Results. | or wider and for Resource Definition is 11m x 21m.This spacing | ||||||||||||||||||||||||||
• Whether the data spacing and | includes data that has been verified from previous exploration | ||||||||||||||||||||||||||
distribution is sufficient to establish the | • | activities on the project. | |||||||||||||||||||||||||
degree | of | geological | and grade | Data spacing and distribution is considered sufficient for | |||||||||||||||||||||||
continuity appropriate for the Mineral | establishing geological continuity and grade variability | ||||||||||||||||||||||||||
Resource and Ore Reserve estimation | • | appropriate for classifying a Mineral Resource. | |||||||||||||||||||||||||
procedure(s) | and | classifications | Sample compositing was not applied due to the often-narrow | ||||||||||||||||||||||||
applied. | mineralised zones. | ||||||||||||||||||||||||||
• Whether sample compositing has | |||||||||||||||||||||||||||
been applied. | |||||||||||||||||||||||||||
• Whether the orientation of sampling | • | Mineralized | zones | in | the Red Lake-Campbell | deposit | are | ||||||||||||||||||||
distinguished first | by | spatial orientation | relative | to structural | |||||||||||||||||||||||
achieves | unbiased | sampling | of | ||||||||||||||||||||||||
corridors and second by the style of mineralization. It is common | |||||||||||||||||||||||||||
possible structures | and the | extent to | |||||||||||||||||||||||||
for mineralized zones to have multiple styles of mineralization | |||||||||||||||||||||||||||
which | this is | known, | considering | the | |||||||||||||||||||||||
within the same host lithology. | |||||||||||||||||||||||||||
deposit type. | |||||||||||||||||||||||||||
• There are four types of mineralization in Red Lake-Campbell | |||||||||||||||||||||||||||
Deposit; 1) Vein Style Gold Mineralization, 2) | |||||||||||||||||||||||||||
Vein and Sulphide Style Gold Mineralization, 3) Disseminated | |||||||||||||||||||||||||||
Evolution Mining Limited Quarterly Report March 2020 | 29 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Red Lake Operations Section 1 Sampling Techniques and Data
Criteria | Explanation | Commentary | |||||
• If the relationship between the drilling | Sulphide Style Mineralization locally referred to as replacement | ||||||
orientation and the orientation of key | mineralization 4) Free Gold Mineralization Style | ||||||
mineralised structures is considered to | • The relationship between the drilling orientation and the | ||||||
have introduced a sampling bias, this | orientation of key mineralised structures at Red Lake is not | ||||||
should be assessed and reported if | considered to have introduced a sampling bias and is not | ||||||
material. | considered to be material. | ||||||
• Resource Definition and Exploration drilling is typically planned | |||||||
to intersect mineralised domains in an orientation that does not | |||||||
introduce sample bias. A small number of holes are drilled at | |||||||
sub-optimal orientations to test for alternate geological | |||||||
interpretations. | |||||||
Sample security | • The measures taken to ensure | • Chain of custody protocols to ensure the security of samples are | |||||
followed. Prior to submission samples are retained on site and | |||||||
sample security. | |||||||
access to the samples is restricted. Collected samples are | |||||||
dropped off at the respective commercial laboratories in North | |||||||
Western Ontario. Access into the laboratory is restricted and | |||||||
movements of personnel and the samples are tracked under | |||||||
supervision of the laboratory staff. During some drill campaigns | |||||||
some samples are collected directly from site by the commercial | |||||||
laboratory. While various laboratories have been used, the | |||||||
chain of custody and sample security protocols have remained | |||||||
similar. | |||||||
Audits or reviews | • The results of any audits or reviews | • Internal and External audits have been conducted in the past at | |||||
Red Lake Operations. | |||||||
of sampling techniques and data. | |||||||
Red Lake Section 2 Reporting of Exploration Results |
Red Lake Operations Section 2 Reporting of Exploration Results
Criteria | Explanation | Commentary | |||||||||
Mineral tenement and | • | Type, | reference name/number, | • | Resource Definition drilling was undertaken on the following | ||||||
land tenure status | location | and | ownership | including | mining claims: Cochenour & Red Lake Claims: PAT-8059, | ||||||
agreements or material issues with third | • | PAT-8064,PAT-6850,PAT-6836,MLO-3508 | |||||||||
parties such as joint ventures, | All mining claims are in good standing. Tenure consists of | ||||||||||
partnerships, | overriding | royalties, | Patents, subject to annual Mining Land Taxes issued in | ||||||||
native title interests, historical sites, | January. | ||||||||||
wilderness or national park and | • Title registered on land tenure is 100% owned. | ||||||||||
environmental settings. | • There are currently no paying Royalties. Of the five known | ||||||||||
• The security of the tenure held at the | Royalties within the Mine Closure Plan, two are proximal to the | ||||||||||
time of reporting along with any known | current Cochenour workings, TVX (Kinross) and Inco (Vale), | ||||||||||
impediments to obtaining a licence to | and one is proximal to the Red Lake workings (Hill). The | ||||||||||
operate in the area. | shapes are recorded in Engineering work files for future | ||||||||||
reference and mine planning. | |||||||||||
• Historical sites have been rehabilitated and are monitored by | |||||||||||
the Environmental Dept. | |||||||||||
Exploration done by | • | Acknowledgment and appraisal of | • Red Lake and Campbell were first staked during the Red Lake | ||||||||
other parties | exploration by other parties. | ||||||||||
Gold Rush in 1926. Subsequently, there was a period of claim | |||||||||||
cancellations and re-staking of the area. Both mines opened in | |||||||||||
the late 1940's. Red Lake and Campbell Mine were combined | |||||||||||
in 2006 when Goldcorp purchased Campbell Mine. | |||||||||||
• The earliest known exploration on the Cochenour-Willans | |||||||||||
property was in 1925. Cochenour-Willans Gold Mines Ltd. was | |||||||||||
incorporated in 1936 and production began in 1939 at a rate of | |||||||||||
136-181 t/d. Operations ran for 32 years, from 1939-1971. It | |||||||||||
was acquired by Goldcorp in 2008. | |||||||||||
• Aside from the Red Lake gold mines and Cochenour mine, | |||||||||||
Evolution also holds past producing operations that include the | |||||||||||
HG Young, Abino, McMarmac, Gold Eagle Mine, and McKenzie | |||||||||||
Red Lake mines. | |||||||||||
Evolution Mining Limited Quarterly Report March 2020 | 30 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Red Lake Operations Section 2 Reporting of Exploration Results
Criteria
Geology
Drill hole Information
Data aggregation methods
Relationship between mineralisation widths and intercept lengths
Explanation
- Deposit type, geological setting andstyle of mineralisation.
-
A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Materialdrillholes:
o easting and northing of the drillholecollar
o elevation or RL of the drillhole collaro dip and azimuth of the hole
o downhole length and interceptiondepth
o hole length. - In reporting Exploration Results,
weighting averaging techniques, maximum and/or minimum grade truncations (e.g. cutting of high grades) and cut-offgrades are usually materialand should be stated. - Where aggregate intercepts incorporate short lengths of high-graderesults and longer lengths of low-graderesults, the procedure used for such aggregation should be stated and some typical examples of such aggregationsshould be shown in detail.
- The assumptions used for any reporting of metal equivalent valuesshould be clearly stated.
- These relationships are particularly important in the reporting of ExplorationResults.
Commentary
- The mineralization within the Red Lake Operations can be classified as an Archean greenstone belt-hosted gold deposit.
- Red Lake Operations is hosted in the Red Lake greenstone belt within the Uchi Domain on the southern margin of the North Caribou Terrane of the Superior Province, Canada.
- Red Lake Operations is underlain mainly by tholeiitic basalt and locally by komatiitic basalt of the Balmer Assemblage. The mine sequence also includes felsic, peridotitic and other mafic to lamprophyric intrusive rocks of various younger ages. Both Red Lake- Campbell and Cochenour deposits are hosted within significantly folded and sheared portions of the Balmer assemblage. Shear zones act as primary hydrothermal fluid corridors and host significant portions of the gold mineralization in the area. Other significant mineralized structures occur within lower-strain areas of the stratigraphy, usually associated with brittle conjugate fracture systems in close proximity to lithological boundaries possessing high competency contrasts.
- Gold mineralization is hosted in a variety of rock types within the Red Lake Greenstone belt, although the majority of the productive zones occur as vein systems accompanying sulphide replacement within sheared mafic to komatiitic basalts of the Balmer Assemblage.
- Gold bearing zones in the Red Lake-Campbell and Cochenour deposit are distinguished first by spatial orientation relative to structural corridors and second by the style of mineralization. It is common for zones to have multiple styles of mineralization within the same host lithology. There are four styles of mineralization common in the Red Lake-Campbell and Cochenour deposit; Vein style, Vein and Sulphide style, Disseminated Sulphide (Replacement) style and free gold style.
- Refer to the drill hole information table in the Appendix of this report.
- For results reporting: A minimum grade truncation of 2.74gpt standard is followed; no maximum grade truncation standard is applied.
- Where aggregate intercepts incorporate short lengths of high- grade and longer lengths of low-grade results, a weighted average of the values is applied to report the entire aggregate intercept. A short length high-grade intercept is then highlighted as an including value if result is >3 times the grade of the entire aggregate intercept in which it is incorporated.
- Intercept length weighted average techniques, minimum grade truncations and cut-off grades have been used in this report.
- If a hole has NSA values (ie gxm is less then 4 or 4g/t x m) the interval has been removed from the hole, if the entire hole has NSA, the hole is noted in the table in the appendix with an NSA value for g/t.
- Composite lengths and grade as well as internal significant values are reported in Appendix.
- No metal equivalent values are used.
- At Red Lake Operations where reliable estimated true widths can be calculated these have been included along with down hole measurements.
Evolution Mining Limited Quarterly Report March 2020 | 31 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Red Lake Operations Section 2 Reporting of Exploration Results
Criteria
Diagrams
Explanation
- If the geometry of the mineralisation with respect to the drill hole angle isknown, its nature should be reported.
- If it is not known and only the downhole lengths are reported, there should be a clear statement to this effect (e.g. 'downhole length, true widthnot known')
- Appropriate maps and sections (with scales) and tabulations of intercepts should be included for any significant discovery being reported. These should include, but not be limited to a plan viewof drill hole.
Commentary
- Drill hole location diagrams and representative sections of reported exploration results are provided either below or in the body of this report.
Plan view showing locations of drill holes and targeted
projects at Deep sulphides and Twin Otter
Plan view showing locations of drill holes and targeted
projects at Cochenour
Balanced reporting | • Where comprehensive reporting of all | • All Exploration and Resource Definition results have been | |||||||
Exploration Results is not practicable, | reported in the Drill Hole Information Summary in the Appendix | ||||||||
representative reporting of both low and | of this report. | ||||||||
high grades and/or widths should be | |||||||||
practiced to avoid misleading reporting | |||||||||
of Exploration Results. | |||||||||
Other substantive | • Other exploration data, if meaningful | • A substantial Exploration and Resource Definition program is | |||||||
and material, should be reported | on-going at the Red Lake Operation site. | ||||||||
exploration data | |||||||||
including (but not limited to): geological | |||||||||
observations; | geophysical | survey | |||||||
results; geochemical survey | results; | ||||||||
bulk samples - size and method of | |||||||||
treatment; metallurgical test | results; | ||||||||
Evolution Mining Limited Quarterly Report March 2020 | 32 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Red Lake Operations Section 2 Reporting of Exploration Results
Criteria | Explanation | Commentary | |||||||
bulk density, groundwater, geotechnical | |||||||||
and rock | characteristics; | potential | |||||||
deleterious | or | contaminating | |||||||
substances. | |||||||||
Further work | • The nature and | scale of | planned | • Further Exploration, Near Mine Exploration and Resource | |||||
further work (e.g. tests for lateral | Definition work on the Red Lake Operations is planned for the | ||||||||
extensions or depth extensions or | remainder of FY20 | ||||||||
largescale step-out drilling). |
- Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commerciallysensitive.
Cowal
Cowal Section 1 Sampling Techniques and Data
Cowal Section 1 Sampling Techniques and Data
Criteria | Explanation | Commentary | ||||||||||
Sampling techniques | • Nature and quality of sampling (e.g. cut | • Holes in this report consist of conventional diamond core | ||||||||||
channels, random chips, or specific | drilling. | |||||||||||
specialised | industry | standard | • Drill holes were positioned strategically to infill gaps in the | |||||||||
measurement tools appropriate to the | existing drill data set and test continuity of known | |||||||||||
minerals under investigation, such as | lodes/mineralised structures. Collar and down hole surveys | |||||||||||
downhole | gamma | sondes, | handheld | were utilised to accurately record final locations. Industry | ||||||||
XRF instruments, etc.). These examples | standard sampling, assaying and QA/QC practices were | |||||||||||
should not be taken as limiting the broad | applied to all holes. | |||||||||||
meaning of sampling. | • Prior to 2018 drill core was halved with a diamond saw in 1 m | |||||||||||
• Include reference to measures taken to | intervals, irrespective of geological contacts. Since 2018 | |||||||||||
Sampling to lithological contacts has been implemented. Oxide | ||||||||||||
ensure sample representation and the | ||||||||||||
material that was too soft and friable to be cut with a diamond | ||||||||||||
appropriate | calibration | of | any | |||||||||
saw was split with a chisel. Core was cut to preserve the bottom | ||||||||||||
measurement tools or systems used. | ||||||||||||
of hole orientation mark and the top half of core sent for analysis | ||||||||||||
• Aspects | of | the | determination | of | ||||||||
to ensure no bias is introduced. RC samples were collected | ||||||||||||
mineralisation | that are material to | the | ||||||||||
directly from a splitter at the drill rig. | ||||||||||||
Public Report. | ||||||||||||
• Sample preparation was conducted by SGS West Wyalong and | ||||||||||||
- In cases where 'industry standard' ALS Orange. Sample preparation consisted of:
work has been completed this would be | • Drying in the oven at 105ºC; crushing in a jaw crusher; fine | ||||||||||
relatively | simple | (e.g. | 'reverse | crushing in a Boyd crusher to 2-3mm; rotary splitting a 3kg | |||||||
circulation drilling was used to obtain 1 | assay sub-sample if the sample is too large for the LM5 mill; | ||||||||||
m samples from which 3 kg was | pulverising in the LM5 mill to nominal; 90% passing 75 µm; and | ||||||||||
pulverised to produce a 30 g charge for | a 50g fire assay charge was taken with an atomic absorption | ||||||||||
fire assay'). In other cases, more | (AA) finish. The detection limit was 0.01 g/t Au. | ||||||||||
explanation may be required, such as | |||||||||||
where there is coarse gold that has | |||||||||||
inherent sampling problems, or unusual | |||||||||||
commodities/mineralisation | types (e.g. | ||||||||||
submarine nodules). | |||||||||||
Drilling technique | • Drill type (e.g. core, reverse circulation, | • Diamond drill holes were drilled HQ diameter through the | |||||||||
open-hole hammer, rotary air blast, | clay/oxide and NQ diameter through the primary rock to end of | ||||||||||
auger, Bangka, sonic, etc.) and details | hole. | ||||||||||
(e.g. core diameter, triple or standard | • All core in this report has been drilled since 2009 and has been | ||||||||||
tube, depth of diamond tails, face- | oriented using accepted industry techniques at the time. | ||||||||||
sampling bit or other type, whether core | |||||||||||
is oriented and if so, by what method, | |||||||||||
etc.). | |||||||||||
Drill sample recovery | • Method of recording and assessing core | • Provisions are made in the drilling contract to ensure that hole | |||||||||
and chip sample recoveries and results | deviation is minimised, and core sample recovery is maximised. | ||||||||||
assessed. | Core recovery is recorded in the database. There are no | ||||||||||
Evolution Mining Limited Quarterly Report March 2020 | 33 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Cowal Section 1 Sampling Techniques and Data
Criteria | Explanation | Commentary |
- Measures taken to maximise samplesignificant core loss or sample recovery issues. Core is
recovery and ensure representativereoriented and marked up at 1m intervals. Measurements of
nature of the samples. | recovered core are made and reconciled to the driller's depth | ||||||||||||||||
• Whether a relationship exists between | blocks, and if necessary, to the driller's rod counts. | ||||||||||||||||
• There is very no apparent relationship between core-loss and | |||||||||||||||||
sample recovery and grade and whether | |||||||||||||||||
grade. | |||||||||||||||||
sample bias may have occurred due to | |||||||||||||||||
preferential | loss/gain | of | fine/coarse | ||||||||||||||
material. | |||||||||||||||||
• Logging | • Whether core and chip samples have | • | Geologists log core | for lithology, alteration, structure, and | |||||||||||||
veining. Logging was done directly onto laptop computers via | |||||||||||||||||
been | geologically | and | geotechnically | ||||||||||||||
LogChief software which is validated and uploaded directly into | |||||||||||||||||
logged | to a | level | of | detail | to support | ||||||||||||
the Datashed database. | |||||||||||||||||
appropriate Mineral Resource estimation, | |||||||||||||||||
• The Cowal logging system allows recording of both a primary | |||||||||||||||||
mining studies and metallurgical studies. | |||||||||||||||||
and a secondary lithology and alteration. Geologists also record | |||||||||||||||||
• Whether | logging | is | qualitative | or | the colour, texture, grain size, sorting, rounding, fabric, and | ||||||||||||
fabric intensity characterising each lithological interval. | |||||||||||||||||
quantitative in nature. Core (or costean, | |||||||||||||||||
• The logged structures include faults, shears, breccias, major | |||||||||||||||||
channel etc.) photography. | |||||||||||||||||
veins, lithological contacts, and intrusive contacts. Structures | |||||||||||||||||
The total length and percentage of the | |||||||||||||||||
are also recorded as point data to accommodate orientation | |||||||||||||||||
relevant intersections logged. | measurements. | ||||||||||||||||
• Structural measurements are obtained using a core orientation | |||||||||||||||||
device. Core is rotated into its original orientation, using the | |||||||||||||||||
Gyro survey data as a guide. Freiberg compasses and | |||||||||||||||||
Kenometer Core Orientation tools are used for structural | |||||||||||||||||
measurements. | |||||||||||||||||
• Geologists log vein | data including | vein frequency, vein | |||||||||||||||
percentage of interval, vein type, composition, sulphide | |||||||||||||||||
percentage per metre, visible gold, sulphide type, and | |||||||||||||||||
comments relative to each metre logged. | |||||||||||||||||
• | Geotechnical logging is done by field technicians and | ||||||||||||||||
geologists. Logging is on a per metre basis and includes | |||||||||||||||||
percentage core recovery, percentage RQD, fracture count, and | |||||||||||||||||
an estimate of hardness. The geotechnical data is entered into | |||||||||||||||||
the database. | |||||||||||||||||
• All drill core, once logged, is digitally photographed on a core | |||||||||||||||||
tray-by-tray basis. The digital image captures all metre marks, | |||||||||||||||||
the orientation line (BOH) and geologist's lithology, alteration, | |||||||||||||||||
mineralogy, and other pertinent demarcations. The geologists | |||||||||||||||||
highlight geologically significant features such that they can be | |||||||||||||||||
clearly referenced in the digital images. | |||||||||||||||||
Sub-sampling | • If core, whether cut | or | sawn | and | • | Diamond Core is cut with a diamond saw or chisel. Core is cut | |||||||||||
whether quarter, half or all core taken. | to preserve the bottom of hole orientation mark and the top half | ||||||||||||||||
techniques and | |||||||||||||||||
• If non-core, whether riffled, tube | of core is always sent for analysis | to ensure no bias is | |||||||||||||||
sample preparation | |||||||||||||||||
sampled, rotary split, etc. and whether | • | introduced. | |||||||||||||||
sampled wet or dry. | In 2003 Analytical Solutions Ltd conducted a Review of Sample |
- For all sample types, the nature, qualityPreparation, Assay and Quality Control Procedures for Cowal
and appropriateness of the sampleGold Project. This study, combined with respective operating
preparation technique. | company policy and standards (North Ltd, Homestake, Barrick | |
• Quality control procedures adopted for | and Evolution) formed the framework for the sampling, assaying | |
all sub-sampling stages to maximise | and QAQC protocols used at Cowal to ensure appropriate and | |
representivity of samples. | representative sampling. | |
• Measures taken to ensure that the | • Results per interval are reviewed for half core samples and if | |
sampling is representative of the in-situ | unexpected or anomalous assays are returned an additional | |
material collected, including for instance | quarter core may be submitted for assay. | |
results for field duplicate/second-half | ||
sampling. |
- Whether sample sizes are appropriate to the grain size of the material beingsampled.
Quality of assay data | • The nature, quality and appropriateness | • SGS West Wyalong and ALS Orange are utilised as primary | ||||||
sources of analytical information. Round | robin checks are | |||||||
and laboratory tests | of the assaying and laboratory | |||||||
completed regularly between the two laboratories. Both labs | ||||||||
procedures used and whether the | ||||||||
operate to international standards and procedures and take part | ||||||||
technique is considered partial or total. | ||||||||
in the Geostatistical Round Robin inter-laboratory test survey. | ||||||||
The Cowal QA/QC program comprises | blanks, Certified |
Evolution Mining Limited Quarterly Report March 2020 | 34 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Cowal Section 1 Sampling Techniques and Data
Criteria | Explanation | Commentary |
- For geophysical tools, spectrometers,Reference Material (CRM), inter-laboratory duplicate checks,
handheld XRF instruments etc. the | • | and grind checks. | |||||||||||||||||
parameters | used | in | determining | the | 1 in 30 fine crush residue samples has an assay duplicate. 1 in | ||||||||||||||
analysis including instrument make and | 20 pulp residue samples has an assay duplicate. | ||||||||||||||||||
model, reading times, calibrations factors | • | Wet screen grind checks are performed on 1 in 20 pulp residue | |||||||||||||||||
applied and their derivation, etc. | samples. A blank is submitted 1 in every 38 samples, CRM's | ||||||||||||||||||
• Nature of quality | control | procedures | are submitted 1 in every 20 samples. The frequency of repeat | ||||||||||||||||
assays is set at 1 in 30 samples. | |||||||||||||||||||
adopted | (e.g. | standards, | blanks, | ||||||||||||||||
• All sample numbers, including standards and duplicates, are | |||||||||||||||||||
duplicates, | external | laboratory | checks) | ||||||||||||||||
pre-assigned by a | QA/QC | Administrator | and given | to the | |||||||||||||||
and | whether | acceptable | levels | of | |||||||||||||||
sampler on a sample sheet. The QA/QC Administrator monitors | |||||||||||||||||||
accuracy (i.e. lack of bias) and precision | |||||||||||||||||||
the assay results for non-compliance and requests action when | |||||||||||||||||||
have been established. | |||||||||||||||||||
necessary. Batches with CRM's that are outside the ±2SD | |||||||||||||||||||
acceptance criteria are reviewed and re-assayed if definitive | |||||||||||||||||||
bias is determined or if re-assay will make a material difference. | |||||||||||||||||||
• Material | used | for | blanks | is | uncertified, | sourced | locally, | ||||||||||||
comprising fine river gravel which has been determined to be | |||||||||||||||||||
below detection limit. A single blank is submitted every 38 | |||||||||||||||||||
samples. Results are reviewed by the QA/QC Administrator | |||||||||||||||||||
upon receipt for non-compliances. Any assay value greater than | |||||||||||||||||||
0.1 g/t Au will result in a notice to the laboratory. Blank assays | |||||||||||||||||||
above 0.20 g/t Au result in re-assay of the entire batch. The | |||||||||||||||||||
duplicate assays (Au2) are taken by the laboratory during the | |||||||||||||||||||
subsampling at the crushing and pulverisation stages. The | |||||||||||||||||||
results were analysed using scatter plots and relative | |||||||||||||||||||
percentage difference (RPD) plots. Repeat assays represent | |||||||||||||||||||
approx. 10% of total samples assayed. Typically, there is a large | |||||||||||||||||||
variance at the lower grades which is common for low grade | |||||||||||||||||||
gold deposits, however, the variance decreases to less than | |||||||||||||||||||
10% for grades above 0.40 g/t Au, which is the cut-off grade | |||||||||||||||||||
used at Cowal. | |||||||||||||||||||
• Approximately | 5% | of the pulps, representing a range of | |||||||||||||||||
expected grades, are submitted to an umpire assay laboratory | |||||||||||||||||||
(ALS Orange) to check for repeatability and precision. Analysis | |||||||||||||||||||
of the data shows that the Principal Laboratory is performing to | |||||||||||||||||||
an acceptable level. | |||||||||||||||||||
Verification of | • | The | verification | of | significant | • No dedicated twinning drilling has been conducted for this drill | |||||||||||||
program. | |||||||||||||||||||
sampling and | intersections by | either | independent | or | • | ||||||||||||||
Cowal uses DataShed software system | to maintain the | ||||||||||||||||||
assaying | alternative company personnel. | ||||||||||||||||||
database. Digital assay results are loaded directly into the | |||||||||||||||||||
• The use of twinned holes. | database. The software performs verification checks including | ||||||||||||||||||
checking | for | missing sample | numbers, | matching | sample | ||||||||||||||
- Documentation of primary data, datanumbers, changes in sampling codes, inconsistent "from-to"
entry procedures, data verification andentries, and missing fields. Results are not entered into the
data storage (physical and electronic)database until the QA/QC Administrator approves of the results.
protocols. | A QA/QC report is completed for each drill hole and filed with | |||||||||
the log, assay sheet, and other appropriate data. Only the | ||||||||||
• Discuss any adjustment to assay data | ||||||||||
Senior Project Geologist and Database Manager have | ||||||||||
administrator rights to the database. Others can use and sort | ||||||||||
the database but not save or delete data. | ||||||||||
Location of data | • Accuracy and quality of surveys used to | • All drill hole collars were surveyed using high definition DGPS. | ||||||||
All drill holes were surveyed using a downhole survey camera. | ||||||||||
points | locate drillholes (collar | and downhole | ||||||||
The first survey reading was taken near the collar to determine | ||||||||||
surveys), trenches, mine | workings and | |||||||||
accurate set up and then at regular intervals downhole. | ||||||||||
other locations used in Mineral Resource | ||||||||||
• On completion of each angled drill hole, a down hole gyroscopic | ||||||||||
estimation. | ||||||||||
(Gyro) survey was conducted. The Gyro tool was referenced to | ||||||||||
• Specification of the grid system used. | • | the accurate surface surveyed position of each hole collar. | ||||||||
The Gyro results were entered into the drill hole database | ||||||||||
• Quality and adequacy of topographic | ||||||||||
without conversion or smoothing. | ||||||||||
control. | • | An aerial survey was flown during 2003 by AAM Hatch. This | ||||||||
digital data has been combined with surveyed drill hole collar | ||||||||||
positions and other features (tracks, lake shoreline) to create a | ||||||||||
digital terrain model (DTM). The survey was last updated in late | ||||||||||
2014. | ||||||||||
• In 2004, Cowal implemented a new mine grid system with the | ||||||||||
assistance of AAM Hatch. The current mine grid system covers | ||||||||||
all areas within the ML and ELs at Cowal with six digits. | ||||||||||
Evolution Mining Limited Quarterly Report March 2020 | 35 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Cowal Section 1 Sampling Techniques and Data
Criteria | Explanation | Commentary | ||||||
Data spacing and | • | Data spacing for reporting of | • The exploration drillholes reported in this report are targeted to | |||||
Exploration Results. | test for continuity of mineralisation as interpreted from previous | |||||||
distribution | ||||||||
• Whether the data spacing and | drilling. It is not yet known whether this drilling is testing the full | |||||||
distribution is sufficient to establish the | extent of the mineralised geological zones. All drilling prior to | |||||||
degree of geological and grade continuity | 2018 is sampled at 1 m intervals down hole. Lithological based | |||||||
appropriate for the Mineral Resource and | sampling was implemented in 2018 with a maximum sample | |||||||
Ore Reserve estimation procedure(s) and | length of 1m and a minimum sample length of 0.3m to avoid | |||||||
classifications applied. | sampling across geological boundaries. |
- Whether sample compositing has beenapplied.
Orientation of data in | • Whether the orientation of sampling | • Diamond holes were positioned to optimise intersection angles | |||||
relation to geological | achieves unbiased sampling of possible | of the target area. In respect of the drilling at E41W drilling is | |||||
structure | structures and the extent to which this is | targeted to drill at right angles to the dominant vein direction | |||||
known, considering the deposit type. | however the extent of the vein package is currently unknown. | ||||||
• If the relationship between the drilling | • The Drilling at Galway Regal is oriented perpendicular to the | ||||||
orientation and the orientation of key | known mineralised package. | ||||||
mineralised structures is considered to | |||||||
have introduced a sampling bias, this | |||||||
should be assessed and reported if | |||||||
material. | |||||||
Sample security | • The measures taken to ensure sample | • Drill contractors are issued with drill instructions by an Evolution | |||||
geologist. The sheet provides drill hole names, details, sample | |||||||
security. | |||||||
requirements, and depths for each drill hole. Drill hole sample | |||||||
bags are pre-numbered. The drill holes are sampled by | |||||||
Evolution personnel who prepare sample submission sheets. | |||||||
The submission sheet is then emailed to the laboratory with a | |||||||
unique submission number assigned. This then allows | |||||||
individual drill holes to be tracked. | |||||||
• An SGS West Wyalong (SGS) representative collects the | |||||||
samples from site twice daily, however, if samples are being | |||||||
sent to another laboratory a local freight company is used to | |||||||
collect the samples from site and deliver them to the laboratory. | |||||||
Upon arrival, the laboratory sorts each crate and compares the | |||||||
received samples with the supplied submission sheet. The | |||||||
laboratory assigns a unique batch number and dispatches a | |||||||
reconciliation sheet for each submission via email. The | |||||||
reconciliation sheet is checked, and any issues addressed. The | |||||||
new batch name and dispatch information is entered into the | |||||||
tracking sheet. The laboratory processes each batch separately | |||||||
and tracks all samples through the laboratory utilising the LIMS | |||||||
system. Upon completion, the laboratory emails Standard | |||||||
Industry Format (SIF) files with the results for each batch to | |||||||
Evolution personnel. | |||||||
• The assay batch files are checked against the tracking | |||||||
spreadsheet and processed. The drill plan is marked off | |||||||
showing completed drill holes. Any sample or QA/QC issues | |||||||
with the results are tracked and resolved with the laboratory. | |||||||
• Audits or reviews | • The results of any audits or reviews of | • QA/QC Audits of the Primary SGS West Wyalong Laboratory | |||||
are carried out on an approximately quarterly basis and for the | |||||||
sampling techniques and data. | |||||||
Umpire ASL Orange Laboratory approximately on a six-monthly | |||||||
basis. Any issues are noted and agreed remedial actions | |||||||
assigned and dated for completion. | |||||||
• Numerous internal audits of the database and systems have | |||||||
been undertaken by site geologists and company technical | |||||||
groups from North Ltd, Homestake, Barrick and Evolution. | |||||||
External audits were conducted in 2003 by RMI and QCS Ltd. | |||||||
and in 2011 and 2014 review and validation was conducted by | |||||||
RPA. MiningOne conducted a review of the Cowal Database in | |||||||
2016 as part of the peer review process for the Stage H | |||||||
Feasibility Study. Recent audits have found no significant issues | |||||||
with data management systems or data quality. |
Evolution Mining Limited Quarterly Report March 2020 | 36 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Cowal Section 2 Reporting of Exploration Results
Cowal Section 2 Reporting of Exploration Results
Criteria | Explanation | Commentary | |||||||||
Mineral tenement and | • Type, reference name/number, location | • | The Cowal Mine is located on the western side of Lake | ||||||||
and ownership including agreements or | Cowal in central New South Wales, approximately 38 km | ||||||||||
land tenure status | |||||||||||
material issues with third parties such as | north of West Wyalong and 350 km west of Sydney. Drilling | ||||||||||
joint ventures, partnerships, overriding | documented in this report was undertaken on ML1535. This | ||||||||||
royalties, native title interests, historical | Lease is wholly owned by Evolution Mining Ltd. and CGO | ||||||||||
sites, wilderness or national park and | has all required operational, environmental and heritage | ||||||||||
environmental settings. | permits and approvals for the work conducted on the Lease. | ||||||||||
• The security of the tenure held at the | There are not any other known significant factors or risks | ||||||||||
time of reporting along with any known | that may affect access, title, or the right or ability to perform | ||||||||||
impediments to obtaining a licence to | further work programs on the Lease. | ||||||||||
operate in the area. | |||||||||||
Exploration done by | • | Acknowledgment and | appraisal | of | • The Cowal region has been subject to various exploration and | ||||||
drilling programs by GeoPeko, North Ltd., Rio Tinto Ltd., | |||||||||||
other parties | exploration by other parties. | ||||||||||
Homestake and Barrick. | |||||||||||
Geology | • | Deposit type, geological | setting | and | • The Cowal gold deposits (E41, E42, E46, Galway and Regal) | ||||||
occur within the 40 km long by 15 km wide Ordovician Lake | |||||||||||
style of mineralisation. | |||||||||||
Cowal Volcanic Complex, east of the Gilmore Fault Zone | |||||||||||
within the eastern portion of the Lachlan Fold Belt. There is | |||||||||||
sparse outcrop across the Lake Cowal Volcanic Complex | |||||||||||
and, as a consequence, the regional geology has largely | |||||||||||
been defined by interpretation of regional aeromagnetic and | |||||||||||
exploration drilling programs. | |||||||||||
• The Lake Cowal Volcanic Complex contains potassium rich | |||||||||||
calc-alkaline to shoshonitic high level intrusive complexes, | |||||||||||
thick trachyandesitic volcanics, and volcaniclastic sediment | |||||||||||
piles. | |||||||||||
• | The gold deposits at Cowal are structurally hosted, | ||||||||||
epithermal to mesothermal gold deposits occurring within and | |||||||||||
marginal to a 230 m thick dioritic to gabbroic sill intruding | |||||||||||
trachy-andesitic volcaniclastic rocks and lavas. | |||||||||||
• The overall structure of the gold deposits is complex but in | |||||||||||
general consists of a faulted antiform that plunges shallowly | |||||||||||
to the north-northeast. The deposits are aligned along a | |||||||||||
north-south orientated corridor with bounding faults, the | |||||||||||
Booberoi Fault on the western side and the Reflector Fault on | |||||||||||
the eastern side (the Gold Corridor). | |||||||||||
Drill hole Information | • A summary of all information material to | • | Drill hole information is provided in the Drill Hole Information | ||||||||
the understanding of the exploration | Summary presented in the Appendix of this report. | ||||||||||
results including a tabulation of the | |||||||||||
following information for all Material | |||||||||||
drillholes: |
- easting and northing of the drillhole collar
- elevation or RL of the drillhole collar
- dip and azimuth of the hole
- downhole length and interception depth
- hole length.
Data aggregation | • In reporting Exploration | Results, | • Significant intercepts have nominally been calculated based | |||
weighting | averaging | techniques, | on a minimum interval length of 3m, max internal dilution of | |||
methods | ||||||
maximum | and/or minimum | grade | 5m and a minimum grade of 0.4g/t Au. However, some | |||
truncations (e.g. cutting of high grades) | intervals with sizable Au grades may be reported individually | |||||
and cut-off grades are usually material | if appropriate. Au Grades are reported un-cut. | |||||
and should be stated. |
- Where aggregate intercepts incorporate short lengths of high grade results and longer lengths of low grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should beshown in detail.
Evolution Mining Limited Quarterly Report March 2020 | 37 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Cowal Section 2 Reporting of Exploration Results
Criteria | Explanation | Commentary | ||||||
• The assumptions used for any reporting | ||||||||
of metal equivalent values should be | ||||||||
clearly stated. | ||||||||
Relationship between | • | These relationships are particularly | • Mineralisation within the drilling area is bounded by large | |||||
important in the reporting of Exploration | north-south trending structures, however it has strong | |||||||
mineralisation widths | ||||||||
Results. | internally oblique structural controls. Drill holes are typically | |||||||
and intercept lengths | ||||||||
• If the geometry of the mineralisation with | oriented to optimise the angle of intercept at the target | |||||||
respect to the drill hole angle is known, its | location. All significant intercepts are reported as down hole | |||||||
nature should be reported. | intervals unless labelled as Estimated True Widths (ETW). | |||||||
• If it is not known and only the downhole | ||||||||
lengths are reported, there should be a | ||||||||
clear statement to this effect (e.g. | ||||||||
'downhole length, true width not known') | ||||||||
Diagrams | • | Appropriate maps and sections (with | • Drill hole location plans for reported drilling at Cowal is | |||||
provided below. A representative section is provided. | ||||||||
scales) and tabulations of intercepts | ||||||||
should be included for any significant | ||||||||
discovery being reported. These should | ||||||||
include, but not be limited to a plan view | ||||||||
of drill hole | ||||||||
Drill hole location plan
Cross section through E42 and GRE46
Balanced reporting • Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting ofExploration Results
- Significant intercepts reported are only those areas where mineralisation was identified.
- These assay results have not been previously reported.
- All earlier significant assay results have been reported in previous ASX announcements.
- The intercepts reported for this period form part of a larger drill program that was still in progress at the time of writing. Remaining holes are awaiting logging, processing and assays and future significant results will be published as appropriate.
Evolution Mining Limited Quarterly Report March 2020 | 38 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Cowal Section 2 Reporting of Exploration Results
Criteria | Explanation | Commentary | |||||||||
Other substantive | • Other exploration | data, if meaningful | • No other substantive data was collected during the report | ||||||||
period. | |||||||||||
exploration data | and material, should be reported including | ||||||||||
(but | not | limited | to): | geological | |||||||
observations; geophysical survey results; | |||||||||||
geochemical survey results; bulk samples |
- size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious orcontaminating substances.
Further work | • The nature and scale of planned further |
work (e.g. tests for lateral extensions or | |
depth extensions or largescale step-out | |
drilling). | |
• Diagrams clearly highlighting the areas | |
of possible extensions, including the main | |
geological interpretations and future | |
drilling areas, provided this information is | |
not commercially sensitive. |
- Results from these programs will be incorporated into current models and interpretations and further work will be determined based on the outcomes.
Mungari
Mungari Section 1 Sampling Techniques and Data
Mungari Section 1 Sampling Techniques and Data
Criteria | Explanation | Commentary | ||||||||
Sampling techniques | • Nature and quality of sampling (e.g. | • Sampling of gold mineralisation at Mungari was undertaken | ||||||||
cut channels, random chips, or | using diamond core (surface) and reverse circulation (RC) drill | |||||||||
specific specialised industry standard | chips. | |||||||||
measurement tools appropriate to the | • All drill samples were logged prior to sampling. Diamond drill | |||||||||
minerals under investigation, such as | core was sampled to lithological, alteration and mineralisation | |||||||||
downhole gamma sondes, handheld | related contacts, whilst RC samples were collected at 1m | |||||||||
XRF instruments, etc). These | downhole intervals. Sampling was carried out according to | |||||||||
examples should not be taken as | Evolution protocols and QAQC procedures which comply with | |||||||||
limiting the broad meaning of | industry best practice. All drill-hole collars were surveyed using | |||||||||
sampling. | a total station theodolite or total GPS. | |||||||||
• Include reference to measures taken | • The sampling and assaying methods are appropriate for the | |||||||||
to ensure sample representation and | orogenic mineralised system and are representative for the | |||||||||
the appropriate calibration of any | mineralisation style. The sampling and assaying suitability was | |||||||||
measurement tools or systems used. | validated using Evolution's QAQC protocol and no instruments | |||||||||
• Aspects of the determination of | or tools requiring calibration were used as part of the sampling | |||||||||
mineralisation that are material to the | process. | |||||||||
Public Report. | • RC drilling was sampled to obtain 1m samples using a static | |||||||||
• In cases where 'industry standard' | cone splitter from which 3 to 5 kg was crushed and pulverised | |||||||||
work has been completed this would | to produce a 30g to 50g subsample for fire assay. Diamond | |||||||||
be relatively simple (e.g. 'reverse | drillcore sample intervals were based on geology to ensure a | |||||||||
circulation drilling was used to obtain 1 | representative sample, with lengths ranging from 0.2 to 1.2m. | |||||||||
m samples from which 3 kg was | Surface diamond drilling was half core sampled. All diamond | |||||||||
pulverised to produce a 30 g charge | core samples were dried, crushed and pulverised (total | |||||||||
for fire assay'). In other cases, more | preparation) to produce a 30g to 50g charge for fire assay of Au. | |||||||||
explanation may be required, such as | A suite of multi elements are determined using four-acid digest | |||||||||
where there is coarse gold that has | with ICP/MS and/or an ICP/AES finish for some sample | |||||||||
inherent | sampling | problems, or | intervals. | |||||||
unusual | commodities/mineralisation | |||||||||
types (e.g. submarine nodules). | ||||||||||
Drilling techniques | • Drill | type (e.g. | core, reverse | • RC sampling was completed using a 4.5" to 5.5" diameter face | ||||||
circulation, open-hole hammer, rotary | sampling hammer. Diamond holes from surface were | |||||||||
air blast, auger, Bangka, sonic, etc.) | predominantly wireline NQ2 (50.5mm) or HQ (63.5mm) holes. | |||||||||
and details (e.g. core diameter, triple or | • All diamond core from surface core was orientated using the | |||||||||
standard tube, depth of diamond tails, | reflex (act II or ezi-ori) tool. | |||||||||
face-sampling bit or other type, whether | ||||||||||
Evolution Mining Limited Quarterly Report March 2020 | 39 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Mungari Section 1 Sampling Techniques and Data
Criteria | Explanation | Commentary | ||||||||||||||||
core is oriented and if so, by what | ||||||||||||||||||
method, etc.). | ||||||||||||||||||
Drill sample recovery | • Method of recording and assessing | • RC drilling sample weights were recorded for selected sample | ||||||||||||||||
intervals and monitored for fluctuations against the expected | ||||||||||||||||||
core and chip sample recoveries and | ||||||||||||||||||
sample weight. If samples were below the expected weight, | ||||||||||||||||||
results assessed. | ||||||||||||||||||
feedback was given promptly to the RC driller to modify drilling | ||||||||||||||||||
• Measures taken to maximise sample | • | practices to achieve the expected weights. | ||||||||||||||||
All diamond | core | was orientated | and | measured | during | |||||||||||||
recovery | and ensure | representative | ||||||||||||||||
processing and the recovery recorded | into the drill-hole | |||||||||||||||||
nature of the samples. | ||||||||||||||||||
database. The core was reconstructed into continuous runs on | ||||||||||||||||||
• Whether a relationship exists | ||||||||||||||||||
a cradle for orientation marking. Hole depths were checked | ||||||||||||||||||
between sample recovery and grade | • | against the driller's core blocks. | ||||||||||||||||
and whether sample bias may have | Inconsistencies between the logging and the driller's core depth | |||||||||||||||||
occurred due to preferential loss/gain of | measurement blocks are investigated. Core recovery has been | |||||||||||||||||
fine/coarse material. | acceptable. Surface drilling recoveries were generally excellent | |||||||||||||||||
with the exception of oxide zones however these rarely fell | ||||||||||||||||||
below 90%. | ||||||||||||||||||
• | Measures taken to maximise sample recovery include | |||||||||||||||||
instructions to drillers to slow down drilling rates or reduce the | ||||||||||||||||||
coring run length in less competent ground. | ||||||||||||||||||
• Analysis of drill sample bias and loss/gain was undertaken with | ||||||||||||||||||
the Overall Mine Reconciliation performance where available. | ||||||||||||||||||
Logging | • Whether core and chip samples have | • | RC drill chips and diamond core have been geologically logged | |||||||||||||||
been geologically and | geotechnically | to the level of detail required for the Mineral Resource | ||||||||||||||||
logged to a level of detail to support | • | estimation, mining studies and metallurgical studies. | ||||||||||||||||
appropriate | Mineral | Resource | All logging is both qualitative and quantitative in nature | |||||||||||||||
estimation, | mining | studies | and | recording features such as structural data, RQD, sample | ||||||||||||||
metallurgical studies. | recovery, lithology, mineralogy, alteration, mineralisation types, | |||||||||||||||||
• Whether logging is qualitative or | vein density, oxidation state, weathering, colour etc. All holes | |||||||||||||||||
quantitative in nature. Core (or costean, | • | are photographed wet. | ||||||||||||||||
channel etc.) photography. | All RC and diamond holes were logged in entirety from collar to | |||||||||||||||||
The total length and percentage of the | end of hole. | |||||||||||||||||
relevant intersections logged. | ||||||||||||||||||
Sub-sampling | • If core, | whether cut | or sawn | and | • Most diamond core drilled from surface was half core sampled | |||||||||||||
and the remaining half was retained. In the oxide zone, where | ||||||||||||||||||
techniques and | whether quarter, half or all core taken. | |||||||||||||||||
cutting can wash away samples, some surface holes were full | ||||||||||||||||||
sample preparation | ||||||||||||||||||
• If non-core, whether riffled, | tube | core sampled. | ||||||||||||||||
• All RC samples were split by a cone or a riffle splitter and | ||||||||||||||||||
sampled, rotary split, etc and whether | ||||||||||||||||||
collected into a sequenced calico bag. Any wet samples that | ||||||||||||||||||
sampled wet or dry. | ||||||||||||||||||
could not be riffle split were dried then riffle split. | ||||||||||||||||||
• For all sample types, the nature, | ||||||||||||||||||
• | Sample preparation of RC and diamond samples was | |||||||||||||||||
quality and appropriateness of the | undertaken by external laboratories according to the sample | |||||||||||||||||
sample preparation technique. | preparation and assaying protocol established to maximise the | |||||||||||||||||
• Quality control procedures adopted | representation | of | the Mungari | mineralisation. Laboratories | ||||||||||||||
performance was | monitored as | part | of | Evolution's | QAQC | |||||||||||||
for all sub-sampling stages to maximise | ||||||||||||||||||
procedure. Laboratory inspections were undertaken to monitor | ||||||||||||||||||
representivity of samples. | ||||||||||||||||||
the laboratories compliance to the Mungari sampling and | ||||||||||||||||||
• Measures taken to ensure that the | sample preparation protocol. | |||||||||||||||||
• The sample and size (2.5kg to 4kg) relative to the particle size | ||||||||||||||||||
sampling is representative of the in-situ | ||||||||||||||||||
(>85% passing 75um) of the material sampled is a commonly | ||||||||||||||||||
material | collected, | including | for | |||||||||||||||
utilised practice for effective sample | representation | for gold | ||||||||||||||||
instance | results | for | field | |||||||||||||||
deposits within the Eastern Goldfields of Western Australia. | ||||||||||||||||||
duplicate/second-half sampling. | • | |||||||||||||||||
Quality control procedures adopted to maximise sample | ||||||||||||||||||
• Whether sample sizes are | ||||||||||||||||||
representation for all sub-sampling stages include the collection | ||||||||||||||||||
appropriate to the grain size of the | of field and laboratory duplicates and the insertion of certified | |||||||||||||||||
material being sampled. | reference material as assay standards (1 in 20) and the | |||||||||||||||||
insertion of blank samples (1 in 20) or at the geologist's | ||||||||||||||||||
discretion. Coarse blank material is routinely submitted for | ||||||||||||||||||
assay and is inserted into each mineralised zone where | ||||||||||||||||||
possible. The quality control performance was monitored as part | ||||||||||||||||||
of Evolution's QAQC procedure. | ||||||||||||||||||
• The sample preparation has been conducted by commercial | ||||||||||||||||||
laboratories. All samples are oven dried (between 85°C and | ||||||||||||||||||
105°C), jaw crushed to nominal <3mm and if required split by a | ||||||||||||||||||
rotary splitter device to a maximum sample weight of 3.5kg as | ||||||||||||||||||
required. The primary sample is then pulverised in a one stage |
Evolution Mining Limited Quarterly Report March 2020 | 40 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Mungari Section 1 Sampling Techniques and Data
Criteria
Quality of assay data and laboratory tests
Verification of sampling and assaying
Explanation
• The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is consideredpartial or total.
- For geophysical tools, spectrometers, handheld XRF instruments etc. the parameters used in determining the analysis including instrument make and model, reading times, calibrationsfactors applied and their derivation, etc.
- Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) andprecision have been established.
- The verification of significant intersections by either independent oralternative company personnel.
- The use of twinned holes.
- Documentation of primary data, data entry procedures, data verification and data storage (physical and electronic)protocols.
- Discuss any adjustment to assay data
Commentary
process, using a LM5 pulveriser, to a particle size of >85% passing 75um. Approximately 200g of the primary sample is extracted by spatula to a numbered paper pulp bag that is used for a 40g fire assay charge. The pulp is retained and the bulk residue is disposed of after two months.
- There are two assay analysis methods used for Boomer diamond samples with visible gold have four 40g charges extracted from the parent pulp sample bag and fire assayed with the average used for final reporting. This is to manage the variability in assay grades due to the nuggetty gold. Boomer vein intercepts without visible gold have the standard 1 x 40g fire assay as described above.
-
Measures taken to ensure sample representation include the collection of field duplicates during RC drilling at a frequency rate of 5%. Duplicate samples for both RC chips and diamond core are collected during the sample preparation pulverisation stage. A comparison of the duplicate sample vs. the primary sample assay result was undertaken as part of Evolution's
QAQC protocol. It is considered that all sub-sampling and lab preparations are consistent with other laboratories in Australia and are satisfactory for the intended purpose. - The sample sizes are considered appropriate and in line with industry standards.
- The sampling preparation and assaying protocol used at Mungari was developed to ensure the quality and suitability of the assaying and laboratory procedures relative to the mineralisation types.
- Fire assay is designed to measure the total gold within a sample. Fire assay has been confirmed as a suitable technique for orogenic type mineralisation. It has been extensively used throughout the Goldfields region. Screen fire assay and LeachWELL / bottle roll analysis techniques have also been used to validate the fire assay techniques.
- The technique utilised a 30g, 40g or 50g sample charge with a lead flux, which is decomposed in a furnace with the prill being totally digested by 2 acids (HCI and HN03) before the gold content is determined by an AAS machine.
- No geophysical tools or other remote sensing instruments were utilised for reporting or interpretation of gold mineralisation.
- Quality control samples were routinely inserted into the sampling sequence and were also inserted either inside or around the expected zones of mineralisation. The intent of the procedure for reviewing the performance of certified standard reference material is to examine for any erroneous results (a result outside of the expected statistically derived tolerance limits) and to validate if required; the acceptable levels of accuracy and precision for all stages of the sampling and analytical process. Typically, batches which fail quality control checks are re-analysed.
- Independent internal or external verification of significant intercepts is not routinely completed. The quality control / quality assurance (QAQC) process ensures the intercepts are representative for the orogenic gold systems. Half core and sample pulps are retained at Mungari if further verification is required.
- The twinning of holes is not a common practice undertaken at Mungari. The face sample and drill hole data with the mill reconciliation data is of sufficient density to validate neighbouring samples. Data which is inconsistent with the known geology undergoes further verification to ensure its quality.
- All sample and assay information is stored utilising the acQuire database software system. Data undergoes QAQC validation prior to being accepted and loaded into the database. Assay results are merged when received electronically from the laboratory. The geologist reviews the database checking for the correct merging of results and that all data has been received
Evolution Mining Limited Quarterly Report March 2020 | 41 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Mungari Section 1 Sampling Techniques and Data
Criteria | Explanation | Commentary | ||||||||||||||||||||
and entered. Any adjustments to this data are recorded | ||||||||||||||||||||||
permanently in the database. Historical paper records (where | ||||||||||||||||||||||
available) are retained in the exploration and mining offices. | ||||||||||||||||||||||
• No adjustments or calibrations have been made to the final | ||||||||||||||||||||||
assay data reported by the laboratory. | ||||||||||||||||||||||
Location of data | • Accuracy and quality of surveys used | • All surface drill holes at Mungari have been surveyed for | ||||||||||||||||||||
easting, northing and reduced level. Recent data is collected | ||||||||||||||||||||||
points | to locate drillholes (collar and downhole | |||||||||||||||||||||
and stored in MGA 94 Zone 51 and AHD. | ||||||||||||||||||||||
surveys), trenches, mine workings and | ||||||||||||||||||||||
• Resource drill hole collar positions are surveyed by the site- | ||||||||||||||||||||||
other | locations | used | in | Mineral | ||||||||||||||||||
based survey | department or | contract surveyors (utilising a | ||||||||||||||||||||
Resource estimation. | ||||||||||||||||||||||
differential GPS or conventional surveying techniques, with | ||||||||||||||||||||||
• Specification of the grid system used. | reference to a known base station) with a precision of less than | |||||||||||||||||||||
0.2m variability. | ||||||||||||||||||||||
• Quality and adequacy of topographic | ||||||||||||||||||||||
• | Topographic control was generated from aerial surveys and | |||||||||||||||||||||
control. | detailed Lidar surveys to 0.2m accuracy. | |||||||||||||||||||||
Data spacing and | • | Data | spacing | for | reporting | of | • | The nominal drill spacing for Exploration drilling is 80m x 80m | ||||||||||||||
Exploration Results. | or wider and for Resource Definition is 40m x 40m or in some | |||||||||||||||||||||
distribution | ||||||||||||||||||||||
• Whether the data spacing and | areas 20m x 20m. | This spacing includes data that has been | ||||||||||||||||||||
distribution is sufficient to establish the | • | verified from previous exploration activities on the project. | ||||||||||||||||||||
degree | of | geological | and | grade | Data spacing and distribution is considered sufficient for | |||||||||||||||||
continuity appropriate for the Mineral | establishing geological continuity and grade variability | |||||||||||||||||||||
Resource and Ore Reserve estimation | • | appropriate for classifying a Mineral Resource. | ||||||||||||||||||||
procedure(s) | and | classifications | Sample compositing was not applied due to the often-narrow | |||||||||||||||||||
applied. | mineralised zones. | |||||||||||||||||||||
• Whether sample compositing has | ||||||||||||||||||||||
been applied. | ||||||||||||||||||||||
Orientation of data in | • Whether the orientation of sampling | • Mineralisation at Boomer is hosted within a narrow, folded, | ||||||||||||||||||||
laminated quartz vein, predominantly dipping 65° towards the | ||||||||||||||||||||||
relation to geological | achieves | unbiased | sampling | of | ||||||||||||||||||
south-west, with a shallow south-east plunge. The mineralised | ||||||||||||||||||||||
structure | possible structures | and | the extent | to | ||||||||||||||||||
structure lies within a 35m wide shear zone dipping 70° west. | ||||||||||||||||||||||
which | this | is | known, considering the | |||||||||||||||||||
Surface and underground drilling intersect the mineralisation at | ||||||||||||||||||||||
deposit type. | ||||||||||||||||||||||
an angle to minimise bias. | ||||||||||||||||||||||
• If the relationship between the drilling | • | Drilling at | the | Wookie prospect is | planned to | intersect the | ||||||||||||||||
structure in an orientation that does not introduce sample bias. | ||||||||||||||||||||||
orientation and the orientation of key | ||||||||||||||||||||||
• Surface holes typically intersect at an angle to the mineralisation | ||||||||||||||||||||||
mineralised structures is considered to | ||||||||||||||||||||||
and there | is | no | observed | bias | associated | with drilling | ||||||||||||||||
have introduced a sampling bias, this | ||||||||||||||||||||||
orientation. | ||||||||||||||||||||||
should be assessed and reported if | • | |||||||||||||||||||||
The relationship between the drilling orientation and the | ||||||||||||||||||||||
material. | ||||||||||||||||||||||
orientation of key mineralised structures at Mungari is not | ||||||||||||||||||||||
considered to have introduced a sampling bias and is not | ||||||||||||||||||||||
considered to be material. | ||||||||||||||||||||||
• Resource Definition and Exploration drilling is typically planned | ||||||||||||||||||||||
to intersect ore domains in an orientation that does not introduce | ||||||||||||||||||||||
sample bias. A small number of holes are drilled at sub-optimal | ||||||||||||||||||||||
orientations to test for alternate geological interpretations. | ||||||||||||||||||||||
Sample security | • | The | measures | taken to | ensure | • Chain of custody protocols to ensure the security of samples are | ||||||||||||||||
followed. Prior to submission samples are retained on site and | ||||||||||||||||||||||
sample security. | ||||||||||||||||||||||
access to the samples is restricted. Collected samples are | ||||||||||||||||||||||
dropped off at the respective commercial laboratories in | ||||||||||||||||||||||
Kalgoorlie. | The laboratories are contained within a | |||||||||||||||||||||
secured/fenced compound. Access into the laboratory is | ||||||||||||||||||||||
restricted and movements of personnel and the samples are | ||||||||||||||||||||||
tracked under supervision of the laboratory staff. During some | ||||||||||||||||||||||
drill campaigns some samples are collected directly from site by | ||||||||||||||||||||||
the commercial laboratory. While various laboratories have | ||||||||||||||||||||||
been used, the chain of custody and sample security protocols | ||||||||||||||||||||||
have remained similar. | ||||||||||||||||||||||
Audits or reviews | • The results of any audits or reviews | • The Mungari geology and drilling database was reviewed by | ||||||||||||||||||||
acQuire in | December 2015 | and | no material | issues were | ||||||||||||||||||
of sampling techniques and data. | ||||||||||||||||||||||
identified. | ||||||||||||||||||||||
• Oscillating cone splitter has been in use for RC sampling at all | ||||||||||||||||||||||
prospects. Data collected has returned more consistent | ||||||||||||||||||||||
duplicate sample weights than a standard static cone splitter. |
Mungari Section 2 Reporting of Exploration Results
Evolution Mining Limited Quarterly Report March 2020 | 42 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Mungari Section 2 Reporting of Exploration Results
Criteria | Explanation | Commentary | ||||||||
Mineral tenement and | • Type, | reference name/number, | • | Resource Definition drilling was undertaken on the | ||||||
land tenure status | location | and | ownership | including | following tenements: M15/1827 | |||||
agreements or material issues with third | • | Exploration drilling was undertaken on the following | ||||||||
parties such as joint ventures, | tenements: M15/0688, 16/532 and E15/961. | |||||||||
partnerships, | overriding | royalties, | • All tenements are in good standing and no known impediments | |||||||
native title interests, historical sites, | exist. Prospecting leases with imminent expiries will have | |||||||||
wilderness or national park and | mining lease applications submitted in due course. | |||||||||
environmental settings. |
- The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence tooperate in the area.
Exploration done by | • | Acknowledgment | and | appraisal of | • Exploration | has been | carried | out | by | a number | of | parties | ||||||
including Electrum Resources | NL | (1985-1989), | Castle Hill | |||||||||||||||
other parties | exploration by other parties. | |||||||||||||||||
Resources NL (1989-1996), Goldfields Exploration Ltd (2001) | ||||||||||||||||||
and Cazaly Resources Ltd (2004-2008). The historical data and | ||||||||||||||||||
database have been reviewed by Cube and is deemed to be of | ||||||||||||||||||
acceptable quality for Mineral Resource estimation. | ||||||||||||||||||
• The initial discovery of Frog's Leg was made by Mines and | ||||||||||||||||||
Resources Australia Ltd who was a precursor company to La | ||||||||||||||||||
Mancha Resources Australia Pty Ltd. The deposit was | ||||||||||||||||||
discovered in 2000 as a result of following up on regional | ||||||||||||||||||
anomalism identified through rotary air blast (RAB) and aircore | ||||||||||||||||||
drilling. La Mancha was acquired by Evolution in August 2015. | ||||||||||||||||||
• Significant historical work has been performed across the | ||||||||||||||||||
Regional Tenement package by numerous parties since the | ||||||||||||||||||
original discovery of gold in the region c.1890. Recent | ||||||||||||||||||
exploration commenced during the 1970's onwards and has | ||||||||||||||||||
included exploration for base metal and gold mineralisation. | ||||||||||||||||||
Geology | • Deposit type, geological setting and | • The Greater Picante Trend is located on the eastern margin of | ||||||||||||||||
the Kintore | Tonalite, | NE of the | Castle Hill | deposit. | ||||||||||||||
style of mineralisation. | ||||||||||||||||||
Mineralisation is shear hosted on the contact between the | ||||||||||||||||||
Kintore tonalite and an ultramafic. | ||||||||||||||||||
• The Boomer prospect is located in the southern portion of the | ||||||||||||||||||
Kundana mining area, within the Achaean Norseman-Wiluna | ||||||||||||||||||
greenstone belt of the Eastern Goldfields Province. The | ||||||||||||||||||
Kundana gold deposits are structurally related to the Zuleika | ||||||||||||||||||
Shear Zone, a regional NNW-trending shear zone that | ||||||||||||||||||
juxtaposes the Ora Banda domain to the east and the | ||||||||||||||||||
Coolgardie domain to the west. The Boomer prospect is | ||||||||||||||||||
located on the sheared contact between the Black Flag Group | ||||||||||||||||||
turbidites and andesites and andesitic volcaniclastic rocks of | ||||||||||||||||||
Black Flag Group. | ||||||||||||||||||
Drill hole Information | • A summary of all information material | • Refer to the drill hole information table in the Appendix of this | ||||||||||||||||
to the understanding of the exploration | report. | |||||||||||||||||
results including a tabulation of the | ||||||||||||||||||
following information for all Material | ||||||||||||||||||
drillholes: | ||||||||||||||||||
o easting and northing of the drillhole | ||||||||||||||||||
collar | ||||||||||||||||||
o elevation or RL of the drillhole collar | ||||||||||||||||||
o dip and azimuth of the hole | ||||||||||||||||||
o downhole length and interception | ||||||||||||||||||
depth | ||||||||||||||||||
o hole length. | ||||||||||||||||||
Data aggregation | • In reporting Exploration Results, | • Intercept length weighted average techniques, minimum grade | ||||||||||||||||
methods | weighting | averaging | techniques, | truncations and cut-off grades have been used in this report. | ||||||||||||||
maximum | and/or | minimum grade | • At Boomer composite grades of > 1 g/t have been reported. | |||||||||||||||
truncations (e.g. cutting of high grades) | • Composite lengths and grade as well as internal significant | |||||||||||||||||
and cut-off grades are usually material | values are reported in Appendix. | |||||||||||||||||
and should be stated. | • No metal equivalent values are used. | |||||||||||||||||
• | Where | aggregate | intercepts | |||||||||||||||
incorporate short lengths of high-grade | ||||||||||||||||||
results and longer lengths of low-grade | ||||||||||||||||||
results, the procedure used for such | ||||||||||||||||||
aggregation should be stated and some | ||||||||||||||||||
Evolution Mining Limited Quarterly Report March 2020 | 43 | |||||||||||||||||
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Mungari Section 2 Reporting of Exploration Results
Criteria
Relationship between mineralisation widths and intercept lengths
Diagrams
Explanation | Commentary | |||
typical examples of such aggregations | ||||
should be shown in detail. | ||||
• The assumptions used for any | ||||
reporting of metal equivalent values | ||||
should be clearly stated. | ||||
• These relationships are particularly | • There is a direct relationship between the mineralisation widths | |||
important in the reporting of Exploration | and intercept widths at Mungari. | |||
Results. | • The assay results are reported as down hole intervals however | |||
• If the geometry of the mineralisation | an estimate of true width is provided in Appendix. | |||
with respect to the drill hole angle is | ||||
known, its nature should be reported. | ||||
• If it is not known and only the | ||||
downhole lengths are reported, there | ||||
should be a clear statement to this | ||||
effect (e.g. 'downhole length, true width | ||||
not known') | ||||
• Appropriate maps and sections (with | • Drill hole location diagrams and representative sections of | |||
scales) and tabulations of intercepts | reported exploration results are provided either below or in the | |||
should be included for any significant | body of this report. | |||
discovery being reported. These should | ||||
include, but not be limited to a plan view | ||||
of drill hole. | ||||
Location plan of drilling at the Picante Trend
Evolution Mining Limited Quarterly Report March 2020 | 44 |
APPENDIX 1 - JORC CODE 2012 ASSESSMENT AND REPORTING CRITERIA
Mungari Section 2 Reporting of Exploration Results
Criteria | Explanation | Commentary | |
Location plan of drilling at the Boomer project | ||||||||||||
Balanced reporting | • Where comprehensive reporting of all | • All Exploration and Resource Definition results have been | ||||||||||
Exploration Results is not practicable, | reported in the Drill Hole Information Summary in the Appendix | |||||||||||
representative reporting of both low and | of this report. | |||||||||||
high grades and/or widths should be | ||||||||||||
practiced to avoid misleading reporting | ||||||||||||
of Exploration Results. | ||||||||||||
Other substantive | • Other exploration data, if meaningful | • A substantial Exploration and Resource Definition program is | ||||||||||
and material, should be reported | on-going at the Mungari site. Other works include field mapping | |||||||||||
exploration data | ||||||||||||
including (but not limited to): geological | and geophysical surveys. | |||||||||||
observations; | geophysical | survey | ||||||||||
results; | geochemical | survey | results; | |||||||||
bulk samples - size and method of | ||||||||||||
treatment; | metallurgical | test | results; | |||||||||
bulk density, groundwater, geotechnical | ||||||||||||
and rock | characteristics; | potential | ||||||||||
deleterious | or | contaminating | ||||||||||
substances. | ||||||||||||
Further work | • The | nature | and scale | of | planned | • Further Exploration, Near Mine Exploration and Resource | ||||||
further work (e.g. tests for lateral | Definition work on the Mungari tenements are planned for the | |||||||||||
extensions or depth extensions or | remainder of FY20 | |||||||||||
largescale step-out drilling). |
- Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commerciallysensitive.
Evolution Mining Limited Quarterly Report March 2020 | 45 |
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Evolution Mining Limited published this content on 23 April 2020 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 22 April 2020 23:07:01 UTC