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The Drill Program is fully permitted and is being advanced to build upon the encouraging results from the Company’s recently completed drill program at the Project. The Drill Program is currently anticipated to include:
Reconnaissance-scale Induced Polarization (“IP”) surveying to better define and vector toward zones of higher-grade copper-molybdenum mineralization;
Drilling of up to seven (7) diamond drill holes totaling up to approximately 2,800 metres, targeting the southeast portion of the Project between and beyond historical TECK drill holes;
Detailed geological mapping and prospecting will be conducted to the north and west within the Project’s megabreccia zone to identify additional priority drill targets. Results from the Phase 1 drill program, geophysical surveys, historical drilling, and new geological mapping will be integrated to refine targeting and guide ongoing exploration activities.
The Drill Program is designed to test extensions of known copper-molybdenum mineralization and evaluate new target areas within the broader mineralized system. Exploration activities will be carried out in accordance with applicable permits, environmental best practices, and regulatory requirements.
Field logistics are expected to include either an expanded exploration camp or accommodation through an existing floating logging camp in the area. Vanguard will continue to work closely with the Klahoose First Nation throughout the program, prioritizing ongoing engagement, economic participation opportunities, and collaboration with Klahoose-owned service providers, including a Klahoose-owned logging company where practicable.
The Drill Program is being planned on an accelerated timeline to rapidly follow up on the recently announced drilling results, whichconfirmed a significantly expanded copper-molybdenum mineralized system at Redonda.
In addition to copper and molybdenum, the Company will continue to evaluate the potential presence and significance of rhenium as a possible by-product associated with molybdenite mineralization, where appropriate, as exploration advances.
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Figure1: Molybdenite (MoS₂) observed in drill core as fracture-controlled mineralization with tourmaline
2025 Phase 1 Drill Results Highlight System Growth
Hole 25-01, drilled at a dip of -65°, intersected extensive copper-molybdenum mineralization over much of its length:
From3.05 m to 29.12 m(27.07 m), a weighted average of0.3252% copper and 78 ppm molybdenum
From37.65 m to 387.70 m(350.05 m), a weighted average of0.244% copper and 112 ppm molybdenum
These intercepts extend the higher-grade mineralized zone by an additional199.05 metres, more thandoubling the length of higher-grade mineralizationintersected in the 2023 drilling in cross-section.
Hole 25-01 reached a total depth of510.74 metresand returned a weighted average grade of0.1801% copper and 86 ppm molybdenumover its entire length. Lower-grade mineralization continues beyond the end of the hole, indicating the system remains open at depth.
Hole 25-02, drilled vertically and located approximately30 metres eastof the 2023 drilling, intersected:
From3.05 m to 132.00 m(129.26 m), a weighted average of0.1344% copper and 128 ppm molybdenum
Together, these results demonstrate that copper-molybdenum mineralization at Redonda is laterally and vertically extensive in cross-section. A valid drill permit is currently in place, allowing for continued drilling at the Project during the 2026 exploration season.
Table1: Summary of 2025 Redonda Drill Results
Hole ID | Dip | From (m) | To (m) | Interval (m) | Cu (%) | Mo (ppm) |
25-01 | -65° | 3.05 | 29.12 | 27.07 | 0.3252 | 78 |
25-01 | -65° | 37.65 | 387.70 | 350.05 | 0.2440 | 112 |
25-01 | -65° | 0.00 | 510.74 | 510.74 | 0.1801 | 86 |
25-02 | Vertical | 3.05 | 132.00 | 129.26 | 0.1344 | 128 |
Reported intervals are downhole lengths; true widths have not yet been determined.
Samples were submitted to
The 2025 drill program was guided by targets and structural corridors interpreted from a previously announced airborne geophysical survey conducted by
CuEq values are historical in nature and are based on metal prices and recovery assumptions disclosed by Stamper in its news release. Vanguardhas not independently verified these assumptions and does not rely on these CuEq values as current disclosure.
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Figure2: 2024 Airborne Magnetics (RTP) with lineaments –See release
Collaboration with Klahoose First Nation
Vanguard further announces the Company has made it a priority to work in close collaboration with the Klahoose First Nation (“Klahoose”) throughout the campaign, prioritizing local labour, training opportunities, and the use of Klahoose-affiliated service providers for logistics where practicable. The Company will maintain ongoing engagement throughout the program, including regular updates on work plans and timelines, incorporation of feedback into field operations, and adherence to cultural heritage protocols and environmental best practices within Klahoose Traditional Territory. Vanguard will coordinate site access, safety, and environmental monitoring with Klahoose representatives and will continue to explore additional opportunities for capacity-building and economic participation.
About Redonda
Redonda lies within the
Drilling completed in fall 2025, including Hole 25-01, confirms that copper-molybdenum mineralization associated with the hornblende dike extends to significant depths and thicknesses in cross-section. Hole 25-01 intersected continuous mineralization over much of its 510.74-metre length, substantially extending the vertical and downhole extent of mineralization previously defined by 2023 drilling and demonstrating that the system remains open at depth.
The geological setting at Redonda shares several characteristics with other porphyry-style copper-molybdenum systems in southwestern
Field work has been conducted under a Letter of Support from the Klahoose First Nation within their Traditional Territory, together with a Free Use Permit, Drill Permit, and IP Exemption issued by the
Quality Assurance and Quality Control
Quality assurance and quality control (QA/QC) procedures included the insertion of certified reference materials, blanks, and preparation duplicates into the sample stream. QA/QC samples were submitted to
Analytical Procedures
Sample preparation and analysis were conducted by
Core samples were prepared using ALS method PREP-31A, which includes crushing and pulverizing to produce a representative pulp. Multi-element analyses, including copper and molybdenum, were performed using four-acid digestion with ICP-MS (ME-MS61). Samples returning over-limit copper values were re-analyzed using ore-grade four-acid digestion with ICP-AES (Cu-OG62), and over-limit multi-element values were determined using ME-OG62.
The analytical detection limits for copper and molybdenum using the ME-MS61 method are 0.001% Cu and 0.1 ppm Mo, respectively. Sample sizes and preparation protocols were consistent with
Qualified Person
The scientific and technical information contained in this news release has been reviewed and approved by
About
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On Behalf of the Board of Directors
“David Greenway”
For further information, please contact:
Phone: +1672-533-0348
E-Mail: brent@vanguardminingcorp.com
Website: vanguardminingcorp.com
Neither the Canadian Securities Exchange nor its Regulation Services Provider (as that term is defined in the policies of the CSE) accepts responsibility for the adequacy or accuracy of this release.
Disclaimer for Forward-Looking Information
Certain statements in this news release constitute “forward-looking statements” or “forward-looking information” (collectively, “forward-looking statements”) within the meaning of applicable securities laws. Forward-looking statements are statements that are not historical facts and include, but are not limited to, statements regarding beliefs, plans, expectations, intentions, objectives, strategies, future performance, and anticipated events or results. Forward-looking statements are based on management’s current expectations, estimates, and assumptions, which may prove to be incorrect, and are subject to known and unknown risks and uncertainties that could cause actual results, performance, or developments to differ materially from those expressed or implied. There can be no assurance that the events anticipated in forward-looking statements will occur, or, if they do, what benefits Vanguard will obtain from them. Factors that could cause actual results to differ materially include, among others, exploration results, availability of financing, commodity prices, permitting and regulatory risks, operating risks, and other risks described in the Company’s public disclosure. Forward-looking statements in this release are made as of the date hereof, and Vanguard undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by applicable securities laws. Readers are cautioned not to place undue reliance on forward-looking statements.
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