Announcement PDF Western Mines Group Ltd (WMG or Company) (ASX:WMG) is pleased to update shareholders on geochemical assay results recently received for the first Phase 5 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 MTRC079 to MTRC082, with results from all four holes highlighting broad intersections of nickel sulphide mineralisation and showed further intervals with shallow higher grade results. Robust sulphide mineralisation was seen in holes MTRC080 and MTRC082. MTRC080 returned 235m at 0.28% Ni, 134ppm Co, 228ppm Cu, including a multiple shallow zones of higher grade results including 10m at 0.57% Ni, 148ppm Co, 184ppm Cu, 0.20g/t Pt+Pd from 84m, 9m at 0.44% Ni, 180ppm Co, 353ppm Cu, 0.12g/t Pt+Pd from 105m, and 17m at 0.43% Ni, 176ppm Co, 0385ppm Cu from 177m, including 2m at 0.94% Ni, 377ppm Co, 0.20% Cu, 0.16g/t Pt+Pd from 192m. ASX:WMG www.westernmines.com.au 1 Western Mines Group Ltd Unit 10 448 Roberts Road Subiaco WA 6008 HIGHLIGHTS • Geochemical assay results received for holes MTRC079 to MTRC082 at Mulga Tank • All holes show broad zones of nickel sulphide mineralisation - elevated Ni and S coincident with highly anomalous Cu and PGE: MTRC079 Cumulative 146m at 0.27% Ni, 124ppm Co, 66ppm Cu, 12ppb Pt+Pd with S:Ni 1.2* MTRC080 235m at 0.28% Ni, 134ppm Co, 228ppm Cu, 32ppb Pt+Pd from 83m S:Ni 1.3* MTRC081 Cumulative 154m at 0.29% Ni, 131ppm Co, 65ppm Cu, 20ppb Pt+Pd with S:Ni 0.8* MTRC082 213m at 0.28% Ni, 128ppm Co, 96ppm Cu, 17ppb Pt+Pd from 87m S:Ni 1.1* • Holes MTRC080 and MTRC082 demonstrate strong sulphide mineralisation with robust chalcophiles up to 0.31% Cu and broad zones of ~1% S • MTRC080 and MTRC082 contained a number of shallow zones showing higher grade results: MTRC080 10m at 0.57% Ni, 148ppm Co, 184ppm Cu, 0.20g/t Pt+Pd from 84m 9m at 0.44% Ni, 180ppm Co, 353ppm Cu, 0.12g/t Pt+Pd from 105m 1m at 0.52% Ni, 331ppm Co, 0.30% Cu, 56ppb Pt+Pd from 146m 3m at 0.47% Ni, 270ppm Co, 885ppm Cu, 61ppb Pt+Pd from 150m 7m at 0.41% Ni, 171ppm Co, 299ppm Cu, 39ppb Pt+Pd from 163m 17m at 0.43% Ni, 176ppm Co, 385ppm Cu, 75ppb Pt+Pd from 177m inc. 2m at 0.94% Ni, 377ppm Co, 0.20% Cu, 0.16g/t Pt+Pd from 192m • Steady flow of Phase 5 results expected through rest of August and early September FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK ASX RELEASE 24 AUGUST 2026 Telephone: +61 475 116 798 Email: contact@westernmines.com.au Shares on Issue: 130.37m Share Price: $0.17 Market Cap: $22.16m Cash: $1.58m (30/06/26) These holes mostly aimed to infill previous drilling in the main body of the Mulga Tank Complex and the current mineral resource estimate. Numerous intervals of visually logged disseminated nickel sulphide mineralisation coinciding with assay results showing elevated Ni and S, in combination with anomalous Cu and PGE, including: MTRC079 88m at 0.27% Ni, 122ppm Co, 73ppm Cu, 19ppb Pt+Pd from 160m inc. 3m at 0.38% Ni, 182ppm Co, 200ppm Cu, 66ppb Pt+Pd from 164m and inc. 3m at 0.41% Ni, 178ppm Co, 341ppm Cu, 24ppb Pt+Pd from 178m 32m at 0.26% Ni, 133ppm Co, 47ppm Cu, 9ppb Pt+Pd from 259m 26m at 0.26% Ni, 119ppm Co, 69ppm Cu, 6ppb Pt+Pd from 298m* inc. 2m at 0.40% Ni, 171ppm Co, 156ppm Cu, 9ppb Pt+Pd from 318m Cumulative 146m at 0.27% Ni, 124ppm Co, 66ppm Cu, 12ppb Pt+Pd with S:Ni 1.2* MTRC080 235m at 0.28% Ni, 134ppm Co, 228ppm Cu, 32ppb Pt+Pd from 83m S:Ni 1.3* inc. 10m at 0.57% Ni, 148ppm Co, 184ppm Cu, 0.20g/t Pt+Pd from 84m and inc. 9m at 0.44% Ni, 180ppm Co, 353ppm Cu, 0.12g/t Pt+Pd from 105m and inc. 1m at 0.52% Ni, 331ppm Co, 0.30% Cu, 56ppb Pt+Pd from 145m and inc. 3m at 0.47% Ni, 270ppm Co, 885ppm Cu, 61ppb Pt+Pd from 150m and inc. 7m at 0.41% Ni, 171ppm Co, 299ppm Cu, 39ppb Pt+Pd from 163m and inc. 17m at 0.43% Ni, 176ppm Co, 385ppm Cu, 75ppb Pt+Pd from 177m that inc. 2m at 0.94% Ni, 377ppm Co, 0.20% Cu, 0.16g/t Pt+Pd from 192m MTRC081 107m at 0.30% Ni, 125ppm Co, 61ppm Cu, 16ppb Pt+Pd from 104m inc. 10m at 0.43% Ni, 165ppm Co, 178ppm Cu, 89ppb Pt+Pd from 172m and inc. 4m at 0.36% Ni, 149ppm Co, 257ppm Cu, 35ppb Pt+Pd from 204m 47m at 0.29% Ni, 139ppm Co, 71ppm Cu, 31ppb Pt+Pd from 247m inc. 2m at 0.76% Ni, 294ppm Co, 757ppm Cu, 44ppb Pt+Pd from 280m that inc. 1m at 1.05% Ni, 400ppm Co, 0.11% Cu, 70ppb Pt+Pd from 280m 17m at 0.26% Ni, 149ppm Co, 71ppm Cu, 17ppb Pt+Pd from 301m* Cumulative 154m at 0.29% Ni, 131ppm Co, 65ppm Cu, 20ppb Pt+Pd with S:Ni 0.8* MTRC082 213m at 0.28% Ni, 128ppm Co, 96ppm Cu, 17ppb Pt+Pd from 87m S:Ni 1.1* inc. 5m at 0.36% Ni, 135ppm Co, 182ppm Cu, 18ppb Pt+Pd from 88m and inc. 3m at 0.64% Ni, 259ppm Co, 0.13% Cu, 0.10g/t Pt+Pd from 105m and inc. 15m at 0.42% Ni, 169ppm Co, 206ppm Cu, 1ppb Pt+Pd from 152m and inc. 5m at 0.41% Ni, 162ppm Co, 121ppm Cu, 0ppb Pt+Pd from 174m and inc. 3m at 0.42% Ni, 145ppm Co, 87ppm Cu, 55ppb Pt+Pd from 245m and inc. 1m at 0.69% Ni, 307ppm Co, 341ppm Cu, 76ppb Pt+Pd from 280m * Ending in mineralisation ASX:WMG www.westernmines.com.au 2 ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK Commenting on the latest RC assay results, WMG Managing Director Dr Caedmon Marriott said: “Phase 5 assay results are now staring to flow through and its good to see these first four holes are all mineralised, MTRC080 and MTRC082 in particular show some robust sulphide mineralisation. MTRC080 returned multiple shallow zones over 0.40% Ni which is one of the exploration goals we’re targeting in this phase. The hole also showed a number of intersections of higher grade Cu, up to 0.31% Cu, associated with the richer sulphide zones. The central-eastern portion of the Complex has generally returned richer Cu grades. Hole MTRC082 was also another strong follow- up hole with multiple shallow +0.40% Ni results. In a number of instances across these holes the Ni and Cu mineralisation appears offset, or rather there’s possible evidence for Ni depletion associated with otherwise very robust sulphide mineralsation. This Cu-Ni fractionation of sulphide melts is well described in other deposits and may help as a vector, indicating a downstream position from a massive sulphide event. A regular flow of Phase 5 assays in expected over the next few weeks.” MULGA TANK DRILLING PROGRAMS Exploration results from the Company’s various drilling programs at the Mulga Tank Project over the last three years have demonstrated significant nickel sulphide mineralisation and an extensive nickel sulphide mineral system within the Mulga Tank Ultramafic Complex. WMG has undertaken a combination of both diamond and reverse circulation (RC) drilling. With this two pronged approach, RC is used to infill and prove up the extent of shallow disseminated nickel sulphide mineralisation, defined by the Company’s recent Mineral Resource Estimate (ASX, Mulga Tank Mineral Resource Over 5Mt Contained Nickel, 10 April 2025), whilst the diamond drilling program continues to test deeper targets for basal massive sulphide. The four RC holes reported are part of the Phase 5 program designed to infill within the current mineral resource estimate and follow-up on previous holes MTRC046 and MTRC066. HIGH MGO ADCUMULATE DUNITE Assay results for MTRC079 averaged 46.4% MgO and 0.39% Al2O3 (volatile free) over the 259m ultramafic portion of the hole, MTRC080 averaged 46.4% MgO and 0.30% Al2O3 (volatile free) over 253m of ultramafic, MTRC081 averaged 46.5% MgO and 0.31% Al2O3 (volatile free) over 256m of ultramafic and MTRC082 averaged 46.1% MgO and 0.41% 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%. The 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. However, significant intersections of >1% Ni as sulphide mineralisation seen in previous results, provide evidence and support that Mulga Tank is actually more likely a ‘Hybrid’ Type 1/2 system more akin to Perseverance. ASX:WMG www.westernmines.com.au 3 ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM 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 these four holes 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. 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. ASX:WMG www.westernmines.com.au 4 Figure 1: Assay results for RC holes MTRC079 to MTRC082 ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK MTRC079 88m at 0.27% Ni, 122ppm Co, 73ppm Cu, 19ppb Pt+Pd from 160m inc. 3m at 0.38% Ni, 182ppm Co, 200ppm Cu, 66ppb Pt+Pd from 164m and inc. 3m at 0.41% Ni, 178ppm Co, 341ppm Cu, 24ppb Pt+Pd from 178m 32m at 0.26% Ni, 133ppm Co, 47ppm Cu, 9ppb Pt+Pd from 259m 26m at 0.26% Ni, 119ppm Co, 69ppm Cu, 6ppb Pt+Pd from 298m* inc. 2m at 0.40% Ni, 171ppm Co, 156ppm Cu, 9ppb Pt+Pd from 318m Cumulative 146m at 0.27% Ni, 124ppm Co, 66ppm Cu, 12ppb Pt+Pd with S:Ni 1.2* * Ending in mineralisation MTRC080 235m at 0.28% Ni, 134ppm Co, 228ppm Cu, 32ppb Pt+Pd from 83m S:Ni 1.3* inc. 10m at 0.57% Ni, 148ppm Co, 184ppm Cu, 0.20g/t Pt+Pd from 84m and inc. 9m at 0.44% Ni, 180ppm Co, 353ppm Cu, 0.12g/t Pt+Pd from 105m and inc. 1m at 0.52% Ni, 331ppm Co, 0.30% Cu, 56ppb Pt+Pd from 145m and inc. 3m at 0.47% Ni, 270ppm Co, 885ppm Cu, 61ppb Pt+Pd from 150m and inc. 7m at 0.41% Ni, 171ppm Co, 299ppm Cu, 39ppb Pt+Pd from 163m and inc. 17m at 0.43% Ni, 176ppm Co, 385ppm Cu, 75ppb Pt+Pd from 177m that inc. 2m at 0.94% Ni, 377ppm Co, 0.20% Cu, 0.16g/t Pt+Pd from 192m * Ending in mineralisation ASX:WMG www.westernmines.com.au 5 Figure 3: MTRC079 S:Ni Ratio Figure 2: MTRC079 Cu and Pt+Pd ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK MTRC081 107m at 0.30% Ni, 125ppm Co, 61ppm Cu, 16ppb Pt+Pd from 104m inc. 10m at 0.43% Ni, 165ppm Co, 178ppm Cu, 89ppb Pt+Pd from 172m and inc. 4m at 0.36% Ni, 149ppm Co, 257ppm Cu, 35ppb Pt+Pd from 204m 47m at 0.29% Ni, 139ppm Co, 71ppm Cu, 31ppb Pt+Pd from 247m inc. 2m at 0.76% Ni, 294ppm Co, 757ppm Cu, 44ppb Pt+Pd from 280m that inc. 1m at 1.05% Ni, 400ppm Co, 0.11% Cu, 70ppb Pt+Pd from 280m 17m at 0.26% Ni, 149ppm Co, 71ppm Cu, 17ppb Pt+Pd from 301m* Cumulative 154m at 0.29% Ni, 131ppm Co, 65ppm Cu, 20ppb Pt+Pd with S:Ni 0.8* * Ending in mineralisation ASX:WMG www.westernmines.com.au 6 Figure 5: MTRC080 S:Ni Ratio Figure 4: MTRC080 Cu and Pt+Pd Figure 6: MTRC081 Cu and Pt+Pd ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK MTRC082 213m at 0.28% Ni, 128ppm Co, 96ppm Cu, 17ppb Pt+Pd from 87m S:Ni 1.1* inc. 5m at 0.36% Ni, 135ppm Co, 182ppm Cu, 18ppb Pt+Pd from 88m and inc. 3m at 0.64% Ni, 259ppm Co, 0.13% Cu, 0.10g/t Pt+Pd from 105m and inc. 15m at 0.42% Ni, 169ppm Co, 206ppm Cu, 1ppb Pt+Pd from 152m and inc. 5m at 0.41% Ni, 162ppm Co, 121ppm Cu, 0ppb Pt+Pd from 174m and inc. 3m at 0.42% Ni, 145ppm Co, 87ppm Cu, 55ppb Pt+Pd from 245m and inc. 1m at 0.69% Ni, 307ppm Co, 341ppm Cu, 76ppb Pt+Pd from 280m * Ending in mineralisation ASX:WMG www.westernmines.com.au 7 Figure 7: MTRC081 S:Ni Ratio Figure 8: MTRC082 Cu and Pt+Pd Figure 9: MTRC082 S:Ni Ratio ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK DISCUSSION These holes were designed to infill within the Mulga Tank Mineral Resource Estimate and follow-up around previous hole MTRC046. MTRC046 returned 193m at 0.33% Ni, 152ppm Co from 107m with robust S:Ni of 1.5. It contained two higher grade zones of 10m at 0.81% Ni, 352ppm Co, 0.28% Cu from 224m and 5m at 1.92% Ni, 711ppm Co, 0.21% Cu, 0.18g/t Pt+Pd from 283m. Similar higher grade zones are seen in holes MTRC032 and MTRC038 ~100-200m to the north and northwest, but are less apparent in MTRC051 located ~150m south of MTRC046. Holes MTRC079 to MTRC081, were drilled as an E-W fence to south of MTRC046, midway between MTRC046 and MTRC051. Further holes MTRC076 and MTRC077 (awaiting assays) were also drilled in this area but to the north of MTRC046, midway between MTRC046 and MTRC032 and MTRC038. MTRC080 returned the best results of the three holes, located between MTRC046 and MTRC051. The upper section of MTRC080 in particular showed very robust indications of sulphide mineralisation with multiple intervals of +0.40% Ni, within a broad zone of very strong Cu and S results (Cu averaging ~600pm and S averaging ~0.8% over approximately 55m from ~140m depth): MTRC080 10m at 0.57% Ni, 148ppm Co, 184ppm Cu, 0.20g/t Pt+Pd from 84m 9m at 0.44% Ni, 180ppm Co, 353ppm Cu, 0.12g/t Pt+Pd from 105m 1m at 0.52% Ni, 331ppm Co, 0.30% Cu, 56ppb Pt+Pd from 145m 3m at 0.47% Ni, 270ppm Co, 885ppm Cu, 61ppb Pt+Pd from 150m 7m at 0.41% Ni, 171ppm Co, 299ppm Cu, 39ppb Pt+Pd from 163m 17m at 0.43% Ni, 176ppm Co, 385ppm Cu, 75ppb Pt+Pd from 177m inc. 2m at 0.94% Ni, 377ppm Co, 0.20% Cu, 0.16g/t Pt+Pd from 192m This strong Cu and S zone is also seen at a similar depth in holes MTRC046 and MTRC051. Hole MTRC082 was the first follow-up hole drilled around MTRC066 and returned some good results. Like MTRC066, MTRC082 showed near continuous mineralisation down the length of the hole. Whilst the upper section was not as enriched as MTRC066, it still retuned a number of +0.40% Ni intervals, within a similar broad zone of robust Cu and S: MTRC082 5m at 0.36% Ni, 135ppm Co, 182ppm Cu, 18ppb Pt+Pd from 88m 3m at 0.64% Ni, 259ppm Co, 0.13% Cu, 0.10g/t Pt+Pd from 105m 15m at 0.42% Ni, 169ppm Co, 206ppm Cu, 1ppb Pt+Pd from 152m 5m at 0.41% Ni, 162ppm Co, 121ppm Cu, 0ppb Pt+Pd from 174m 3m at 0.42% Ni, 145ppm Co, 87ppm Cu, 55ppb Pt+Pd from 245m 1m at 0.69% Ni, 307ppm Co, 341ppm Cu, 76ppb Pt+Pd from 280m This area around MTRC066, and southern most fence of Phase 4 drilling, sits outside the current Mulga Tank Mineral Resource Estimate and will be included an upgrade of the resource when Phase 4 and 5 and included in the resource modelling work. Each phase of drilling and batch of geochemical assay results continues to build our understanding of the Mulga Tank Complex. The Company uses these results to feedback into ongoing exploration targeting work looking to vector towards zones of high-grade mineralisation in what the Company believes is an extensive hybrid nickel sulphide mineral system at Mulga Tank. ASX:WMG www.westernmines.com.au 8 ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK The Company anticipates a steady flow of Phase 5 assay results over the coming weeks and looks forward to updating shareholders on the continuing progress at Mulga Tank as further results are received. For further information please contact: Dr Caedmon Marriott Managing Director Tel: +61 475 116 798 Email: contact@westernmines.com.au Western Mines Group InvestorHub Investors are encouraged to join the Western Mines Group InvestorHub to receive news and updates, engage directly with the WMG team, and post questions and feedback through the Q&A function accompanying each piece of content. How to join: 1. Head to our InvestorHub 2. Follow the prompts to sign up for an InvestorHub account 3. Complete your account profile ASX:WMG www.westernmines.com.au 9 This announcement has been authorised for release to the ASX by Dr Caedmon Marriott, Managing Director ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK APPENDIX ASX:WMG www.westernmines.com.au 10 HoleID From (m) To (m) Interval (m) Ni (%) Co (ppm) Cu (ppm) Pt + Pd (ppb) MTRC079 160 inc. 164 and inc. 178 248 167 181 88 3 3 0.27 0.38 0.41 122 182 178 73 200 341 15 66 24 MTRC079 259 291 32 0.26 133 47 9 MTRC079 298 inc. 318 324 320 26 2 0.26 0.40 119 171 69 156 6 9 MTRC080 83 inc. 84 and inc. 105 and inc. 146 and inc. 150 and inc. 163 and inc. 177 that inc. 192 318 94 114 147 153 170 194 194 235 10 9 1 3 7 17 2 0.28 0.57 0.44 0.52 0.47 0.41 0.43 0.94 134 148 180 331 270 171 176 377 228 184 353 2950 885 299 385 1965 32 195 122 56 61 39 75 164 MTRC081 104 inc. 172 and inc. 204 211 182 208 107 10 4 0.30 0.43 0.36 125 165 149 61 178 257 16 89 35 MTRC081 247 inc. 280 that inc. 280 294 282 281 47 2 1 0.29 0.76 1.05 139 294 400 71 757 1105 31 44 70 MTRC081 301 318 17 0.26 149 71 17 MTRC082 87 inc. 88 and inc. 105 and inc. 152 and inc. 174 and inc. 245 and inc. 280 300 93 108 167 179 248 281 213 5 3 15 5 3 1 0.28 0.36 0.64 0.42 0.41 0.42 0.69 128 135 259 169 162 145 307 96 182 1345 206 121 87 341 17 18 106 1 0 55 76 Table 1: Significant intersections holes MTRC079 to MTRC082 HoleID Easting (MGA51) Northing (MGA51) Total Depth (m) Azimuth Dip MTRC079 520819 6688429 324 270 -70 MTRC080 520896 6688432 318 270 -70 MTRC081 520999 6688432 318 270 -70 MTRC082 520570 6688120 300 270 -70 Table 2: Collar details for RC holes MTRC079 to MTRC082 ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK ASX:WMG www.westernmines.com.au 11 ABOUT WMG Western Mines Group Ltd (ASX:WMG) is a mineral exploration company driven by the goal to create significant investment returns for our shareholders through exploration and discovery of high-value gold and nickel sulphide deposits across a portfolio of highly- prospective projects located on major mineral belts of Western Australia. Our flagship project is the Mulga Tank Ni-Co-Cu-PGE Project, a 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. An Mineral Resource Estimate of 1,968Mt at 0.27% Ni, over 5.3Mt of contained nickel, was announced in April 2025, making Mulga Tank the largest nickel sulphide deposit in Australia. The Company’s primary gold project is Jasper Hill, where WMG has strategically consolidated a 3km mineralised gold trend with walk-up drill targets. WMG has a diversified portfolio of other projects including Fraser Range (Ni-Cu-Co), Mt Narryer (Ni-Co-Cu-PGE, Au) and Youanmi (Au). 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 Geoscientists and a Member of the Society of Economic Geologists. He has sufficient experience that is relevant 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. Western Mines Group Ltd ACN 640 738 834 Unit 10, 448 Roberts Road Subiaco WA 6008 Board Rex Turkington Non-Executive Chairman Dr Caedmon Marriott Managing Director Francesco Cannavo Non-Executive Director Dr Benjamin Grguric Technical Director Capital Structure Shares: 130.37m Options: 25.70m Share Price: $0.17 Market Cap: $22.16m Cash (30/06/26): $1.58m Follow us @westernmines Western Mines Group ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK MULGA TANK PROJECT JORC CODE, 2012 EDITION - TABLE 1 SECTION 1: SAMPLING TECHNIQUES AND DATA Criteria JORC Code explanation Commentary Sampling techniques • Nature and quality of sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. • Include reference to measures taken to ensure sample representivity and the appropriate calibration 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. • Reverse circulation (RC) drilling was completed using standard industry best practice • Individual 1m samples were collected directly from the rig sampling system. Samples were crushed and pulverised to produce a sub- sample for analysis by either multi-element ICP-AES (ME-ICP61 and ME-ICP41), precious metals fire assay (Au-AA25 or PGM-ICP23) and loss on ignition at 1,000°C (ME-GRA05) Drilling techniques • Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) 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). • Reverse circulation percussion drilling rig with a 5.25inch face sampling bit Drill sample recovery • Method of recording and assessing core and chip sample recoveries and results assessed. • Measures taken to maximise sample recovery and ensure representative nature of the samples. • 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. • Standard drilling techniques using “best practice” to maximise sample recovery • Information not available to assess relationship between sample recovery and grade ASX:WMG www.westernmines.com.au 12 ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK Logging • 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 the relevant intersections logged. • Drill holes geologically logged on a metre basis • Logging is to a level of detail sufficient to support a Mineral Resource estimation, though further information would be required • Logging is qualitative in nature and recorded lithology, mineralogy, mineralisation, weathering, colour, and other features of the samples. Chip trays were photographed in both dry and wet form • Drillhole was logged in full, apart from rock rolled pre-collar intervals Sub-sampling techniques and sample preparation • If core, whether cut or sawn and whether quarter, half or all core taken. • If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. • For all sample types, the nature, quality and appropriateness of the sample preparation technique. • Quality control procedures adopted for all sub- sampling stages to maximise representivity 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 the material being sampled. • Individual 1m samples were collected directly from the rig sampling system. Samples were crushed and pulverised to produce a sub- sample for analysis by either multi-element ICP-AES (ME-ICP61 and ME-ICP41), precious metals fire assay (Au-AA25 or PGM-ICP23) and loss on ignition at 1,000°C (ME-GRA05) • Majority of samples were dry however some ground water was encountered and some samples were taken wet • Industry standard sample preparation techniques were undertaken and considered appropriate for the sample type and material sampled • The sample size is considered appropriate to the grain size of the material being sampled Quality of assay data and laboratory tests • The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. • For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors 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) and precision have been established. • Samples analysed by four-acid digest multi- element ICP-AES (ME-ICP61) or precious metals fire assay (Au-AA25 or PGM-ICP23) are considered total or near total techniques • Samples analysed by aqua regia digest multi- element ICP-AES (ME-ICP41) is considered a partial technique of soluble sulphide • Standards, blanks and duplicate samples were introduced through-out the sample collection on a 1:20 ratio to ensure quality control • ALS also undertake duplicate analysis and run internal standards as part of their assay regime Verification of sampling and assaying • The verification of significant intersections by either independent or alternative company personnel. • The use of twinned holes. • Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. • Discuss any adjustment to assay data. • Primary logging data was collected using Ocris logging system on a laptop computer, • Significant reported assay results were verified by multiple alternative company personnel • All logging and assay data was compiled into a SQL database server Criteria JORC Code explanation Commentary ASX:WMG www.westernmines.com.au 13 ASX RELEASE | FIRST PHASE 5 ASSAY RESULTS FROM MULGA TANK SECTION 2: REPORTING OF EXPLORATION RESULTS Location of data points • Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. • Specification of the grid system used. • Quality and adequacy of topographic control. • Drill holes located using a handheld GPS with accuracy of +/-3m • Downhole surveys were performed at collar and end of hole • Coordinates are in GDA2020 UTM Zone 51 Data spacing and distribution • Data spacing for reporting of Exploration Results. • Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. • Whether sample compositing has been applied. • Spacing and location of holes infills within existing Mineral Resource estimate • No sample compositing Orientation of data in relation to geological structure • Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to