Cyprium Metals Limited announced the Company's maiden Mineral Resource estimate (MRE) for the Nifty copper deposit following the completion of the acquisition of the Paterson Copper Project in March 2021. Cyprium's previously disclosed estimate for Nifty was based on a review of the estimate disclosed by the former owner of the project at 31 December 2019. The current Nifty MRE of 45.9Mt at 1.6% copper for a total contained copper inventory of approximately 732,000t is significant because for the first time, a single model has been constructed of the various geometallurgical domains reflecting how the copper mineralisation can be recovered. The Nifty Heap Leach Restart Study is focussed on the development of the first phase of the project that involves a return to heap leaching and solvent extraction electrowinning (SX-EW) to produce refined copper cathode on site. The significant inventory of remnant heap leachable mineralisation confirmed by this MRE (11.9Mt at 1.1% copper for approximately 135,000t of contained copper metal). Recent drilling at Nifty West and East has been designed primarily to confirm the mineralisation and to improve the confidence, hence classification of inferred resource, plus possible extension of mineralisation. By way of background, Nifty was discovered by Western Mining Corporation in 1981 with open pit and heap leaching operations exploiting copper oxide ore commencing in 1993. The operation was purchased by Straits Resources Ltd. in 1998 who continued heap leaching operations for their entire tenure. Aditya Birla Minerals Ltd. acquired Nifty in 2003 with open pit operations ceasing in 2006 and heap leaching operations discontinued during the first quarter of 2009 leaving approximately 17Mt of partially leached material on the pads. Since that time, Nifty has operated entirely as an underground mining operation producing a copper concentrate in a separate dedicated flotation circuit. More than 714,000t of copper metal was produced by the previous operations at Nifty up to 2019. Much of the information outlined below has been drawn from the historic production activities and incorporated into the new MRE. The Nifty sediment-hosted copper deposit is hosted within the Neoproterozoic sub-greenschist facies of the Paterson Orogen, some 330 km southeast of Port Hedland, 200km east-southeast of Marble Bar and 65km west of Telfer in Western Australia. The northwest trending Paterson Orogen is greater than 1,000km long by 150km to 200km wide and fringes the north-eastern margin of the Archean to Paleoproterozoic Pilbara Craton, and merges with the Musgrave Orogen to the southeast. The Paterson Orogen is composed of two main elements, the Paleo- to early Mesoproterozoic metamorphosed igneous and sedimentary rocks of the Rudall Complex, and the unconformably overlying (approximately 9 to 13km thick) 850 to 824Ma Yeneena Supergroup of the >24,000km2 Neoproterozoic Yeneena Basin. The Nifty deposit had a pre-mining global resource of approximately 100Mt at 1.7% Cu (0.5% Cu cut-off). Copper occurred/s as both supergene oxide, sulphide and transition mineralisation to a depth of approximately 300m and as stratabound hypogene sulphides hosted by carbonaceous and dolomitic shales principally within the Nifty carbonate member, to a depth of approximately 600m. The Nifty copper deposit is a structurally and lithologically controlled stratabound body within the Nifty Syncline, which strikes approximately southeast-northwest and plunges at about 6-12 degrees to the southeast. The massive, disseminated and vein-style copper mineralisation occurs as a structurally controlled, chalcopyrite-quartz-dolomite replacement of carbonaceous and dolomitic shale within the folded sequence. The copper sulphide mineralisation is largely confined to the keel of the syncline and the northern limb. The Nifty deposit has been drilled and sampled using several techniques but only the diamond and reverse circulation drilling results were used for mineral estimation purposes. Holes have been drilled both from surface and from underground and on variable spacings along and across the strike of the deposit. Approximately 284,000m have been drilled within the immediate vicinity of the deposit and in general, the orientation of the drilling was appropriate to the strike and dip of the mineralisation Sampling and Sub-Sampling Techniques All core for analysis was half-cored using a mechanical saw and RC chip samples were collected via a cyclone which was cleaned with air blasts between samples. Field sub-sampling for chip samples and the cutting of core samples was according to industry standard practice as also were the procedures adopted in the on and off-site laboratories. Depending on the laboratory, multi-element assays were completed using various methods including: ME-ICP61 four acid digest using a 0.2g sample with an ICPAES finish; over limit results (>1% Cu) re-analysed using the ME-OG62 method, subjecting a 0.4g sample to a four-acid digest with an ICPAES finish. Four-acid digest using a 0.2g sample with an ICP-OES finish; over limit results (>1% Cu) re-assayed using an ore grade four acid digestion of 0.2g sample, and an AAS finish. On-site laboratory testing involved a fusion XRF15C method. The grade was estimated using ordinary kriging by individual sequence member within the four structural domains of the deposit. The geostatistical assessment of the controlling variograms and the grade estimation was carried out for each stratigraphic unit within each structural domain. Density was assigned by lithology and grade range. The composites were created within each unit and input to the grade estimation was restricted to those composites which were within the unit being estimated. No top-cuts were applied to the composites. A reduced search ellipse approach using half the first search ellipse distance was used for grades >30% Cu. Estimated blocks were informed in a three-step strategy using GEOVIA GEMS software. Drillhole intersections within the mineralised body were defined and then used to flag the appropriate sections of the drillhole database tables for compositing purposes.