Announcement PDF ASX RELEASE 26 SEPTEMBER 2024 PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK HIGHLIGHTS • Geochemical assay results received for Phase 3 RC holes MTRC047 to MTRC050 at Mulga Tank • All holes show broad zones of nickel sulphide mineralisation - elevated Ni and S coincident with highly anomalous Cu and PGE: MTRC047 188m at 0.28% Ni, 129ppm Co, 57ppm Cu, 23ppb Pt+Pd from 112m S:Ni 1.1* MTRC048 Cumulative 173m at 0.29% Ni, 131ppm Co, 36ppm Cu, 19ppb Pt+Pd with S:Ni 0.7* MTRC049 Cumulative 170m at 0.26% Ni, 125ppm Co, 50ppm Cu, 11ppb Pt+Pd with S:Ni 1.0* MTRC050 Cumulative 164m at 0.28% Ni, 127ppm Co, 58ppm Cu, 13ppb Pt+Pd with S:Ni 1.0* • Holes drilled to the south of previous drilling and outside the area modelled in JORC Exploration Target - extending mineralisation in the south on the Mulga Tank Complex • All holes ended in mineralisation with shallow zones of higher grade mineralisation in some holes: MTRC047 9m at 0.53% Ni, 156ppm Co, 95ppm Cu, 62ppb Pt+Pd from 209m 5m at 0.41% Ni, 163ppm Co, 77ppm Cu, 35ppb Pt+Pd from 224m MTRC048 58m at 0.32% Ni, 121ppm Co, 23ppm Cu, 2ppb Pt+Pd from 242m inc. 5m at 0.40% Ni, 115ppm Co, 33ppm Cu, 1ppb Pt+Pd from 266m and inc. 7m at 0.40% Ni, 141ppm Co, 33ppm Cu, 0ppb Pt+Pd from 279m and inc. 6m at 0.57% Ni, 195ppm Co, 92ppm Cu, 2ppb Pt+Pd from 289m that inc. 1m at 1.20% Ni, 356ppm Co, 174ppm Cu, 0ppb Pt+Pd from 290m MTRC049 12m at 0.37% Ni, 143ppm Co, 28ppm Cu, 4ppb Pt+Pd from 175m MTRC050 4m at 0.41% Ni, 221ppm Co, 489ppm Cu, 89ppb Pt+Pd from 147m 21m at 0.34% Ni, 135ppm Co, 50ppm Cu, 17ppb Pt+Pd from 252m • WMG continues to expand and de-risk a potentially globally significant, large-scale, open-pitable nickel sulphide deposit at Mulga Tank Western Mines Group Ltd (WMG or Company) (ASX:WMG) is pleased to update shareholders on geochemical assay results recently received for four Phase 3 reverse circulation (RC) drill holes at the Mulga Tank Project, on the Minigwal Greenstone Belt, in Western Australia’s Eastern Goldfields. Assay results have been received for holes MTRC047 to MTRC050, which were all drilled in new area in the southern part of the main body of the Mulga Tank Complex. Results from all four holes highlight broad intersections of nickel sulphide mineralisation, with all holes ending in mineralisation. The holes extend nickel sulphide mineralisation outside of previously known and tested zones within the Complex. Western Mines Group Ltd Level 3, 33 Ord Street West Perth WA 6005 ASX:WMG Telephone: +61 475 116 798 Email: contact@westernmines.com.au www.westernmines.com.au Shares on Issue: 85.15m Share Price: $0.22 Market Cap: $18.73m Cash: $2.13m (30/06/24) 1 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK Assays results have now been received for 11 of the 19 Phase 3 RC holes drilled to date, with the program being successful in its goals of both infilling around previous drilling in the core of the Complex with holes MTRC040 to MTRC043 (ASX, Phase 3 RC Results Yield Broad Sulphide Mineralisation Zones, 13 September 2024) and also stepping out and extending mineralisation outside of previous tested zones, with results from recent hole MTRC046 showing the best high-grade intersection ever drilled at the project (ASX, MTRC046: Two High-Grade Zones Including 5m at 1.92% Ni 0.21% Cu, 17 September). These latest holes MTRC047 to MTRC050 step out further again from previous drilling and extend known mineralisation with numerous intervals of logged disseminated nickel sulphide mineralisation coinciding with assay results showing elevated Ni and S, in combination with highly anomalous Cu and PGE, including: MTRC047 188m at 0.28% Ni, 129ppm Co, 57ppm Cu, 23ppb Pt+Pd from 112m S:Ni 1.1* inc. 9m at 0.53% Ni, 156ppm Co, 95ppm Cu, 62ppb Pt+Pd from 209m and inc. 5m at 0.41% Ni, 163ppm Co, 77ppm Cu, 35ppb Pt+Pd from 224m and inc. 5m at 0.37% Ni, 139ppm Co, 48ppm Cu, 82ppb Pt+Pd from 273m MTRC048 115m at 0.27% Ni, 135ppm Co, 43ppm Cu, 28ppb Pt+Pd from 116m inc. 8m at 0.37% Ni, 150ppm Co, 72ppm Cu, 82ppb Pt+Pd from 192m and inc. 3m at 0.38% Ni, 155ppm Co, 42ppm Cu, 0.22g/t Pt+Pd from 223m 58m at 0.32% Ni, 121ppm Co, 23ppm Cu, 2ppb Pt+Pd from 242m* inc. 5m at 0.40% Ni, 115ppm Co, 33ppm Cu, 1ppb Pt+Pd from 266m and inc. 7m at 0.40% Ni, 141ppm Co, 33ppm Cu, 0ppb Pt+Pd from 279m and inc. 6m at 0.57% Ni, 195ppm Co, 92ppm Cu, 2ppb Pt+Pd from 289m that inc. 1m at 1.20% Ni, 356ppm Co, 174ppm Cu, 0ppb Pt+Pd from 290m Cumulative 173m at 0.29% Ni, 131ppm Co, 36ppm Cu, 19ppb Pt+Pd with S:Ni 0.7* MTRC049 70m at 0.25% Ni, 120ppm Co, 35ppm Cu, 10ppb Pt+Pd from 107m inc. 12m at 0.37% Ni, 143ppm Co, 28ppm Cu, 4ppb Pt+Pd from 162m 75m at 0.27% Ni, 129ppm Co, 49ppm Cu, 9ppb Pt+Pd from 190m inc. 4m at 0.35% Ni, 143ppm Co, 34ppm Cu, 38ppb Pt+Pd from 205m and inc. 4m at 0.33% Ni, 145ppm Co, 66ppm Cu, 39ppb Pt+Pd from 217m 25m at 0.25% Ni, 131ppm Co, 96ppm Cu, 18ppb Pt+Pd from 275m* Cumulative 170m at 0.26% Ni, 125ppm Co, 50ppm Cu, 11ppb Pt+Pd with S:Ni 1.0* MTRC050 89m at 0.27% Ni, 120ppm Co, 57ppm Cu, 11ppb Pt+Pd from 129m inc. 4m at 0.41% Ni, 221ppm Co, 489ppm Cu, 89ppb Pt+Pd from 147m 75m at 0.29% Ni, 134ppm Co, 61ppm Cu, 15ppb Pt+Pd from 225m* inc. 21m at 0.34% Ni, 135ppm Co, 50ppm Cu, 17ppb Pt+Pd from 252m and inc. 9m at 0.32% Ni, 139ppm Co, 77ppm Cu, 4ppb Pt+Pd from 289m Cumulative 164m at 0.28% Ni, 127ppm Co, 58ppm Cu, 13ppb Pt+Pd with S:Ni 1.0* * Ending in mineralisation ASX:WMG www.westernmines.com.au 2 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK Commenting on the latest RC assay results, WMG Managing Director Dr Caedmon Marriott said: “We’ve stepped out further to the south with these Phase 3 holes, in some cases up to 400m from our previous drilling. This is well outside the area modelled in our JORC Exploration Target which was based on the Phase 1 program - but we are still seeing nickel sulphide mineralisation and the system just keeps getting bigger. The holes show good intervals of sulphide mineralisation with sulphur and associated chalcophile element results (Cu and PGE’s) and some intersections of higher grade results which may provide vectors to further pods or zones of richer material. Some intervals perhaps aren’t quite as strong as those in the core of the Complex and that also provides great information about the system. We’ve already found more than enough tonnes of mineralisation around the Complex so the goals of this step out drilling are really to find the limits of mineralisation (which we haven’t yet in this direction) and to be able to find and differentiate areas of weaker and stronger mineralisation - so we then know which areas to be selective about and focus resource definition. We’re continuously learning more about the Mulga Tank Complex, as these results and recent results from previous hole MTRC046 highlight. This information feeds back into our geological modelling and ongoing exploration targeting work.” MULGA TANK RC DRILLING PROGRAM Exploration results from the Company’s various drilling programs at the Mulga Tank Project over the last 18 months have demonstrated significant nickel sulphide mineralisation and an extensive nickel sulphide mineral system within the Mulga Tank Ultramafic Complex. WMG recently completed a 17 hole 5,534m Phase 2 RC drilling program and another EIS co-funded deep diamond hole at the project (ASX, Completion of Phase 2 RC Drilling Commencement of EIS3, 8 April 2024; High-Grade Sulphide Segregations at Depth in MTD029 (EIS3), 29 May 2024). This two pronged approach uses RC to infill and prove up the extent of shallow disseminated nickel sulphide mineralisation, defined by the Company’s JORC Exploration Target modelling (ASX, Mulga Tank JORC Exploration Target, 5 February 2024), whilst the diamond drilling program continues to test deeper targets. The Company has planned a further 23 hole, ~7,000m Phase 3 RC program based on analysis and modelling of the Phase 2 RC and diamond hole MTD029 (EIS3) results (ASX, Exploration Activities Recommence at Mulga Tank, 4 July 2024). An additional 5 hole, ~2,000m regional RC program has also been designed, the first to test the interpreted komatiite channels in tenement E39/2134. These regional RC holes will be drilled with the aid of one of WMG’s current Exploration Incentive Scheme (EIS) grants (ASX, WMG Wins Two More EIS Awards to Drill Mulga Tank, 29 April 2024). To date, 19 holes of the Phase 3 RC program have been drilled, totalling 6,002m (ASX, First 19 Phase 3 RC Holes Complete at Mulga Tank, 2 September 2024). These holes are all located within the main body of the Mulga Tank Ultramafic Complex. The majority of the holes were designed to test to the south of the previous core area of drilling and in particular to follow-up on holes MTRC032 and MTRC038 which returned high-grade results at the southern extent of previous drilling. Seven of the holes also looked to infill around previous drilling in the core area of the Complex, with four holes around Phase 1 RC hole MTRC016 and three holes in the eastern area between holes MTRC006 and MTRC034 to holes MTD027 and MTRC019. ASX:WMG www.westernmines.com.au 3 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK Figure 1: Phase 3 assay results for disseminated nickel sulphide mineralisation HIGH MGO ADCUMULATE DUNITE Assay results for MTRC047 averaged 45.2% MgO and 0.26% Al2O3 (volatile free) over the 228m ultramafic portion of the hole, MTRC048 averaged 47.6% MgO and 0.35% Al2O3 (volatile free) over 235m of ultramafic, MTRC049 averaged 46.6% MgO and 0.59% Al2O3 (volatile free) over 237m of ultramafic and MTRC050 averaged 47.8% MgO and 0.33% Al2O3 (volatile free) over 232m of ultramafic. Using Al2O3 as a proxy for interstitial material and MgO as a proxy for temperature, geochemical characterisation shows the host rock to be nearly entirely high-temperature, adcumulate to extreme adcumulate dunite with Al2O3 generally between 0.1% and 0.5% and MgO greater than 40%. This observation of extensive intersections of high MgO adcumulate dunite within the Complex, starting essentially immediately under the sand cover, has positive implications for the targeting of large volume, low grade Type 2 Mt-Keith style disseminated nickel sulphide deposits within the Mulga Tank Complex. ASX:WMG www.westernmines.com.au 4 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK NICKEL SULPHIDE MINERALISATION In the absence of magmatic sulphide processes nickel is incorporated into olivine during crystallisation and essentially trapped within the dunite host rock. Whereas, in “live” sulphur saturated mineral systems the nickel will partition into potentially “recoverable” nickel sulphide form. The Company uses a number of elements, such as Cu and PGE’s (Pt and Pd), that have high affinity for sulphide (chalcophile), in combination with S (and the S:Ni ratio) as geochemical indicators to confirm the presence of active magmatic sulphide processes and the geochemical signature of nickel sulphide mineralisation. The geochemical assay results for holes MTRC047 to MTRC050 demonstrate significant evidence for “live” magmatic sulphide chemical processes and show a number of broad zones of highly anomalous Cu and PGE’s in combination with elevated S, and a S:Ni ratio greater than 0.5 (Figures 2 to 9). These anomalous zones provide strong evidence for nickel sulphide mineralisation and were generally defined by a combination of the various geochemical indicators and cut-off grades (Ni >0.15% and S >0.1%; Cu >20ppm, Pt+Pd >20ppb and S:Ni >0.5), with only minimal inclusion of unmineralised material below mineable width. MTRC047 188m at 0.28% Ni, 129ppm Co, 57ppm Cu, 23ppb Pt+Pd from 112m S:Ni 1.1* inc. 9m at 0.53% Ni, 156ppm Co, 95ppm Cu, 62ppb Pt+Pd from 209m and inc. 5m at 0.41% Ni, 163ppm Co, 77ppm Cu, 35ppb Pt+Pd from 224m and inc. 5m at 0.37% Ni, 139ppm Co, 48ppm Cu, 82ppb Pt+Pd from 273m * Ending in mineralisation Figure 2: MTRC047 Cu and Pt+Pd Figure 3: MTRC047 S:Ni Ratio ASX:WMG www.westernmines.com.au 5 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK MTRC048 115m at 0.27% Ni, 135ppm Co, 43ppm Cu, 28ppb Pt+Pd from 116m inc. 8m at 0.37% Ni, 150ppm Co, 72ppm Cu, 82ppb Pt+Pd from 192m and inc. 3m at 0.38% Ni, 155ppm Co, 42ppm Cu, 0.22g/t Pt+Pd from 223m 58m at 0.32% Ni, 121ppm Co, 23ppm Cu, 2ppb Pt+Pd from 242m* inc. 5m at 0.40% Ni, 115ppm Co, 33ppm Cu, 1ppb Pt+Pd from 266m and inc. 7m at 0.40% Ni, 141ppm Co, 33ppm Cu, 0ppb Pt+Pd from 279m and inc. 6m at 0.57% Ni, 195ppm Co, 92ppm Cu, 2ppb Pt+Pd from 289m that inc. 1m at 1.20% Ni, 356ppm Co, 174ppm Cu, 0ppb Pt+Pd from 290m Cumulative 173m at 0.29% Ni, 131ppm Co, 36ppm Cu, 19ppb Pt+Pd with S:Ni 0.7* * Ending in mineralisation Figure 4: MTRC048 Cu and Pt+Pd Figure 5: MTRC048 S:Ni Ratio ASX:WMG www.westernmines.com.au 6 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK MTRC049 70m at 0.25% Ni, 120ppm Co, 35ppm Cu, 10ppb Pt+Pd from 107m inc. 12m at 0.37% Ni, 143ppm Co, 28ppm Cu, 4ppb Pt+Pd from 162m 75m at 0.27% Ni, 129ppm Co, 49ppm Cu, 9ppb Pt+Pd from 190m inc. 4m at 0.35% Ni, 143ppm Co, 34ppm Cu, 38ppb Pt+Pd from 205m and inc. 4m at 0.33% Ni, 145ppm Co, 66ppm Cu, 39ppb Pt+Pd from 217m 25m at 0.25% Ni, 131ppm Co, 96ppm Cu, 18ppb Pt+Pd from 275m* Cumulative 170m at 0.26% Ni, 125ppm Co, 50ppm Cu, 11ppb Pt+Pd with S:Ni 1.0* * Ending in mineralisation Figure 6: MTRC049 Cu and Pt+Pd Figure 7: MTRC049 S:Ni Ratio ASX:WMG www.westernmines.com.au 7 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK MTRC050 8m at 0.64% Ni, 438ppm Co, 646ppm Cu, 21ppb Pt+Pd from 66m S:Ni 0.1 inc. 3m at 1.05% Ni, 906ppm Co, 0.10% Cu, 40ppb Pt+Pd from 67m S:Ni 0.1 89m at 0.27% Ni, 120ppm Co, 57ppm Cu, 11ppb Pt+Pd from 129m inc. 4m at 0.41% Ni, 221ppm Co, 489ppm Cu, 89ppb Pt+Pd from 147m 75m at 0.29% Ni, 134ppm Co, 61ppm Cu, 15ppb Pt+Pd from 225m* inc. 21m at 0.34% Ni, 135ppm Co, 50ppm Cu, 17ppb Pt+Pd from 252m and inc. 9m at 0.32% Ni, 139ppm Co, 77ppm Cu, 4ppb Pt+Pd from 289m Cumulative 164m at 0.28% Ni, 127ppm Co, 58ppm Cu, 13ppb Pt+Pd with S:Ni 1.0* * Ending in mineralisation Figure 8: MTRC050 Cu and Pt+Pd Figure 9: MTRC050 S:Ni Ratio ASX:WMG www.westernmines.com.au 8 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK DISCUSSION Holes MTRC047 to MTRC050 were designed to test to the south of previous drilling, forming part an east-west fence at ~200m drill spacing around 300-400m south of the Phase 1 and 2 areas and linking up to WMG’s diamond hole MTD020 at its eastern end. This part of the main body of the Mulga Tank Ultramafic Complex has not had any previous drilling, other than hole MTD020, which was the first hole drilled by the Company to show broad visible disseminated sulphide mineralisation (ASX, Disseminated Sulphides Seen Over >300m in Hole MTD020, 26 July 2022) and was drilled as a follow-up to historical hole MTD011 (ASX:IPT, Exploration Update: Mulga Tank Project, 19 December 2013). The results demonstrate the system remains open to the south with all four holes showing broad intersections of disseminated nickel sulphide mineralisation containing high sulphur, S:Ni and chalcophile element (Cu and PGE’s) results. The holes extend nickel sulphide mineralisation outside of previously known and tested zones within the Complex and highlight a larger system than that modelled in the Company’s JORC Exploration Target (ASX, Mulga Tank JORC Exploration Target, 5 February 2024). Figure 10: Phase 3 assay results outside the modelling of JORC Exploration Target ASX:WMG www.westernmines.com.au 9 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK The aim of these step out holes is both to try and find the limits of mineralisation and the mineral system, as well as to look to differentiate between areas of the Complex with weaker and stronger mineralisation, defined by the geochemical signature. This will aid the Company’s ability to focus resource definition on zones with stronger mineralisation but also help to gain a greater understanding of the Mulga Tank Complex and aid further exploration targeting of both richer disseminated and massive sulphide mineralisation. Entering this new area of the Complex it is interesting to note the results from hole MTRC048 which returned a broad medium grade zone towards the end of hole of 58m at 0.32% Ni from 242m (ending in mineralisation), with a number of intervals over 0.40% Ni and a further intersection of over 1% Ni. These results further highlight the prospectivity of the extensive Mulga Tank mineral system outside the zones tested to date. MTRC048 58m at 0.32% Ni, 121ppm Co, 23ppm Cu, 2ppb Pt+Pd from 242m* inc. 5m at 0.40% Ni, 115ppm Co, 33ppm Cu, 1ppb Pt+Pd from 266m and inc. 7m at 0.40% Ni, 141ppm Co, 33ppm Cu, 0ppb Pt+Pd from 279m and inc. 6m at 0.57% Ni, 195ppm Co, 92ppm Cu, 2ppb Pt+Pd from 289m that inc. 1m at 1.20% Ni, 356ppm Co, 174ppm Cu, 0ppb Pt+Pd from 290m Figure 11: Cross section W-E through the Mulga Tank Ultramafic Complex ASX:WMG www.westernmines.com.au 10 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK Each phase of drilling and batch of geochemical assay results continues to build our understanding of the Mulga Tank Complex and the extensive disseminated sulphide mineralisation observed. The Company looks forward to regularly updating shareholders on further assay results from the Phase 3 RC drilling program as they become available, along with the progress of the first regional drill holes into the interpreted komatiite channels, that should be complete in the coming week. . For further information please contact: Dr Caedmon Marriott Managing Director Tel: +61 475 116 798 Email: contact@westernmines.com.au This announcement has been authorised for release to the ASX by Dr Caedmon Marriott, Managing Director ASX:WMG www.westernmines.com.au 11 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK APPENDIX HoleID From (m) To (m) Interval (m) Ni (%) Co (ppm) Cu (ppm) Pt + Pd (ppb) MTRC047 112 inc. 209 and inc. 224 and inc. 273 300 218 229 278 188 9 5 5 0.28 0.53 0.41 0.37 129 156 163 139 57 95 77 48 23 62 35 82 MTRC048 116 inc. 192 and inc. 223 231 200 226 115 8 3 0.27 0.37 0.38 135 150 155 43 72 42 28 82 218 MTRC048 242 inc. 266 and inc. 279 and inc. 289 that inc. 290 300 271 286 295 291 58 5 7 6 1 0.32 0.40 0.40 0.57 1.20 121 115 141 195 356 23 33 33 92 174 2 1 0 2 0 MTRC049 107 inc. 162 177 174 70 12 0.25 0.37 120 143 35 28 10 4 MTRC049 190 inc. 205 and inc. 217 265 209 221 75 4 4 0.27 0.35 0.33 129 143 145 49 34 66 9 38 39 MTRC049 275 300 25 0.25 131 96 18 MTRC050 66 inc. 67 74 70 8 3 0.64 1.05 438 906 646 994 21 40 MTRC050 129 inc.147 218 151 89 4 0.27 0.41 120 221 57 489 11 89 MTRC050 225 inc. 252 and inc. 289 300 273 298 75 21 9 0.29 0.34 0.32 134 135 139 61 50 77 15 17 4 Table 1: Significant intersections holes MTRC047 to MTRC050 HoleID Easting (MGA51) Northing (MGA51) Total Depth (m) Azimuth Dip MTRC047 520050 6688340 300 270 -70 MTRC048 520250 6688340 300 270 -70 MTRC049 520500 6688350 300 270 -70 MTRC050 520700 6688350 300 270 -70 Table 2: Collar details for holes MTRC047 to MTRC050 ASX:WMG www.westernmines.com.au 12 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK ABOUT WMG Western Mines Group Ltd Western Mines Group Ltd (ASX:WMG) is a mineral exploration company driven by the goal ACN 640 738 834 Level 3, 33 Ord Street West Perth WA 6005 to create significant investment returns for our shareholders through exploration and discovery of high-value gold and nickel sulphide deposits across a portfolio of highlyprospective projects located on major mineral belts of Western Australia. Our flagship project and current primary focus is the Mulga Tank Ni-Co-Cu-PGE Project, a Board Rex Turkington Non-Executive Chairman Dr Caedmon Marriott Managing Director major ultramafic complex found on the under-explored Minigwal Greenstone Belt (100% WMG). WMG’s exploration work has discovered a significant nickel sulphide mineral system and is considered highly prospective for globally significant Ni-Co-Cu-PGE deposits. The Company’s primary gold project is Jasper Hill, where WMG has strategically Francesco Cannavo Non-Executive Director consolidated a 3km mineralised gold trend with walk-up drill targets. WMG has a diversified Dr Benjamin Grguric Technical Director Leonora in the heart of the WA Goldfields; Youanmi (Au), Pavarotti (Ni-Cu-PGE), Rock of Capital Structure Shares: 85.15m Options: 19.60m Share Price: $0.22 Market Cap: $18.73m Cash (30/06/24): $2.13m Follow us portfolio of other projects including Melita (Au, Cu-Pb-Zn), midway between Kookynie and Ages (Au), Broken Hill Bore (Au) and Pinyalling (Au, Cu, Li). COMPETENT PERSONS STATEMENT The information in this announcement that relates to Exploration Results and other technical information complies with the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code) and has been compiled and assessed under the supervision of Dr Caedmon Marriott, Managing Director of Western Mines Group Ltd. Caedmon is a Member of the Australian Institute of @westernmines Geoscientists, a Member of the Society of Economic Geologists and a Member of the westernmines Australasian Institute of Mining and Metallurgy. He has sufficient experience that is relevant Western Mines Group to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the JORC Code. Caedmon consents to the inclusion in this announcement of the matters based on his information in the form and context in which it appears. DISCLAIMER Some of the statements appearing in this announcement may be in the nature of forward looking statements. You should be aware that such statements are only predictions and are subject to inherent risks and uncertainties. Those risks and uncertainties include factors and risks specific to the industries in which WMG operates and proposes to operate as well as general economic conditions, prevailing exchange rates and interest rates and conditions in the financial markets, among other things. Actual events or results may differ materially from the events or results expressed or implied in any forward looking statement. No forward looking statement is a guarantee or representation as to future performance or any other future matters, which will be influenced by a number of factors and subject to various uncertainties and contingencies, many of which will be outside WMG’s control. WMG does not undertake any obligation to update publicly or release any revisions to these forward looking statements to reflect events or circumstances after today's date or to reflect the occurrence of unanticipated events. No representation or warranty, express or implied, is made as to the fairness, accuracy, completeness or correctness of the information, opinions or conclusions contained in this announcement. To the maximum extent permitted by law, none of WMG, its Directors, employees, advisors or agents, nor any other person, accepts any liability for any loss arising from the use of the information contained in this announcement. You are cautioned not to place undue reliance on any forward looking statement. The forward looking statements in this announcement reflect views held only as at the date of this announcement. ASX:WMG www.westernmines.com.au 13 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK MULGA TANK PROJECT JORC CODE, 2012 EDITION - TABLE 1 SECTION 1: SAMPLING TECHNIQUES AND DATA Criteria Sampling techniques Drilling techniques Drill sample recovery ASX:WMG JORC Code explanation Commentary • Nature and quality of sampling (eg cut channels, • Reverse circulation (RC) drilling was completed random chips, or specific specialised industry using standard industry best practice standard measurement tools appropriate to the • Individual 1m samples were collected directly minerals under investigation, such as down hole from the rig sampling system. Samples were gamma sondes, or handheld XRF instruments, etc). crushed and pulverised to produce a subThese examples should not be taken as limiting the sample for analysis by either multi-element broad meaning of sampling. ICP-AES (ME-ICP61 and ME-ICP41), precious metals fire assay (Au-AA25 or PGM-ICP23) • Include reference to measures taken to ensure sample representivity and the appropriate calibration and loss on ignition at 1,000°C (ME-GRA05) of any measurement tools or systems used. • Aspects of the determination of mineralisation that are Material to the Public Report. • In cases where ‘industry standard’ work has been done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information. • Drill type (eg core, reverse circulation, open-hole • Reverse circulation percussion drilling rig with hammer, rotary air blast, auger, Bangka, sonic, etc) a 5.25inch face sampling bit and details (eg core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other type, whether core is oriented and if so, by what method, etc). • Method of recording and assessing core and chip • Standard drilling techniques using “best sample recoveries and results assessed. practice” to maximise sample recovery • Measures taken to maximise sample recovery and • Information not available to assess relationship ensure representative nature of the samples. between sample recovery and grade • Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/ coarse material. www.westernmines.com.au 14 ASX RELEASE | PHASE 3 ASSAYS EXTEND KNOWN MINERALISATION AT MULGA TANK Criteria Logging Sub-sampling techniques and sample preparation JORC Code explanation Commentary • Whether core and chip samples have been • Drill holes geologically logged on a metre basis geologically and geotechnically logged to a level of • Logging is to a level of detail sufficient to detail to support appropriate Mineral Resource support a Mineral Resource estimation, estimation, mining studies and metallurgical studies. though further information would be required • Whether logging is qualitative or quantitative in • Logging is qualitative in nature and recorded nature. Core (or costean, channel, etc) photography. l i t h o l o g y, m i n e r a l o g y, m i n e r a l i s a t i o n , weathering, colour, and other features of the • The total length and percentage of the relevant samples. Chip trays were photographed in intersections logged. both dry and wet form • Drillhole was logged in full, apart from rock rolled pre-collar intervals • If core, whether cut or sawn and whether quarter, half • Individual 1m samples were collected directly or all core taken. from the rig sampling system. Samples were crushed and pulverised to produce a sub• If non-core, whether riffled, tube sampled, rotary split, sample for analysis by either multi-element etc and whether sampled wet or dry. ICP-AES (ME-ICP61 and ME-ICP41), precious • For all sample types, the nature, quality and metals fire assay (Au-AA25 or PGM-ICP23) appropriateness of the sample preparation technique. and loss on ignition at 1,000°C (ME-GRA05) • Quality control procedures adopted for all subMajority of samples were dry however some • sampling stages to maximise representivity of ground water was encountered and some samples. samples were taken wet • Measures taken to ensure that the sampling is representative of the in-situ material collected, • Industry standard sample preparation techniques were undertaken and considered including for instance results for field duplicate/ appropriate for the sample type and material second-half sampling. sampled • Whether sample sizes are appropriate to the grain The sample size is considered appropriate to • size of the material being sampled. the grain size of the material being sampled • The nature, quality and appropriateness of the • Samples analysed by four-acid digest multiassaying and laboratory procedures used and element ICP-AES (ME-ICP61) or precious whether the technique is considered partial or total. metals fire assay (Au-AA25 or PGM-ICP23) are considered total or near total techniques • For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining • Samples analysed by aqua regia digest multiQuality of the analysis including instrument make and model, element ICP-AES (ME-ICP41) is considered a assay data reading times, calibrations factors applied and their partial technique of soluble sulphide and laboratory derivation, etc. tests • Standards, blanks and duplicate samples were introduced through-out the sample collection • Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory on a 1:20 ratio to ensure quality control checks) and whether acceptable levels of accuracy • ALS also undertake duplicate analysis and run (i.e. lack of bias) and precision have been established. internal standards as part of their assay regime Verification of sampling and assaying ASX:WMG • The verification of significant intersections by either • Primary logging data