ASX RELEASE 17 SEPTEMBER 2024 MTRC046: TWO HIGH-GRADE ZONES INCLUDING 5M AT 1.92% Ni 0.21% Cu HIGHLIGHTS • Geochemical assay results received for Phase 3 RC holes MTRC044 to MTRC046 at Mulga Tank • All holes show broad zones of nickel sulphide mineralisation - elevated Ni and S coincident with highly anomalous Cu and PGE: MTRC044 Cumulative 187m at 0.28% Ni, 121ppm Co, 34ppm Cu, 10ppb Pt+Pd with S:Ni 0.8* MTRC045 Cumulative 174m at 0.28% Ni, 125ppm Co, 49ppm Cu, 14ppb Pt+Pd with S:Ni 0.7* MTRC046 193m at 0.33% Ni, 152ppm Co, 310ppm Cu, 25ppb Pt+Pd from 107m S:Ni 1.5* • Standout results from MTRC046 with the best high-grade intersection ever drilled at the Mulga Tank Project • Two high-grade zones confirming extension of mineralisation to the south of hole MTRC032: MTRC046 10m at 0.81% Ni, 352ppm Co, 0.28% Cu, 77ppb Pt+Pd from 224m inc. 4m at 1.14% Ni, 501ppm Co, 803ppm Cu, 0.14g/t Pt+Pd from 224m and inc. 5m at 0.61% Ni, 258ppm Co, 0.49% Cu, 32ppb Pt+Pd from 229m 7m at 1.52% Ni, 578ppm Co, 0.16% Cu, 0.17g/t Pt+Pd from 282m inc. 5m at 1.92% Ni, 711ppm Co, 0.21% Cu, 0.18g/t Pt+Pd from 283m MTRC032 3m at 0.60% Ni, 337ppm Co, 0.1% Cu, 44ppb Pt+Pd from 131m inc. 1m at 1.08% Ni, 602ppm Co, 379ppm Cu, 83ppb Pt+Pd from 131m 6m at 1.01% Ni, 443ppm Co, 0.32% Cu, 0.12g/t Pt+Pd from 254m • Mineralisation appears to correlate between holes MTRC032 and MTRC046 and possibly be thickening and enriching towards the south • All three holes located outside the area of JORC Exploration Target modelling - demonstrating the system remains open to the south and potential for an increase in the Exploration Target estimate • WMG continues to de-risk and expand 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 three 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 MTRC044 to MTRC046, located to the south of previous RC drilling within the main body of the Mulga Tank Complex. Results from all three holes highlight broad intersections of nickel sulphide mineralisation, with all holes ending in mineralisation. 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: $0.235 Market Cap: $20.01m Cash: $2.13m (30/06/24) 1 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu MTRC046 is the standout hole with the best high-grade intersection ever drilled at the Mulga Tank Project. The hole returned a continuous interval of 193m at 0.33% Ni, 152ppm Co from 107m (ending in mineralisation) that included high-grade intersections of 4m at 1.14% Ni, 501ppm Co, 803ppm Cu, 0.14g/t Pt+Pd from 224m, 5m at 0.61% Ni, 258ppm Co, 0.49% Cu from 229m and 5m at 1.92% Ni, 711ppm Co, 0.21% Cu and 0.18g/t Pt+Pd from 283m. Hole MTRC046 was drilled as a follow-up, 100m to the south of Phase 2 hole MTRC032 that had shown a continuous interval of 198m at 0.28% Ni, 145ppm Co from 108m (ending in mineralisation) which included 1m at 1.08% Ni, 602ppm Co from 131m and 6m at 1.01% Ni, 0.32% Cu from 254m. The two high-grade zones appear to correlate between the holes and possibly thickening and enriching towards the south. Another Phase 3 hole MTRC051 has been drilled a further 150m to the south, with results pending. Numerous intervals of logged disseminated nickel sulphide mineralisation coincide with elevated Ni and S in the assays, in combination with highly anomalous Cu and PGE, including: MTRC044 33m at 0.28% Ni, 108ppm Co, 25ppm Cu, 3ppb Pt+Pd from 102m 50m at 0.29% Ni, 120ppm Co, 20ppm Cu, 5ppb Pt+Pd from 139m inc. 4m at 0.39% Ni, 157ppm Co, 35ppm Cu, 6ppb Pt+Pd from 184m 104m at 0.27% Ni, 125ppm Co, 43ppm Cu, 14ppb Pt+Pd from 196m* inc. 8m at 0.40% Ni, 161ppm Co, 104ppm Cu, 19ppb Pt+Pd from 277m Cumulative 187m at 0.28% Ni, 121ppm Co, 34ppm Cu, 10ppb Pt+Pd with S:Ni 0.8* MTRC045 113m at 0.26% Ni, 116ppm Co, 55ppm Cu, 10ppb Pt+Pd from 115m 61m at 0.32% Ni, 142ppm Co, 37ppm Cu, 22ppb Pt+Pd from 239m* inc. 10m at 0.47% Ni, 191ppm Co, 60ppm Cu, 29ppb Pt+Pd from 280m Cumulative 174m at 0.28% Ni, 125ppm Co, 49ppm Cu, 14ppb Pt+Pd with S:Ni 0.7* MTRC046 193m at 0.33% Ni, 152ppm Co, 310ppm Cu, 25ppb Pt+Pd from 107m S:Ni 1.5* inc. 1m at 0.80% Ni, 355ppm Co, 0.12% Cu, 78ppb Pt+Pd from 182m and inc. 10m at 0.81% Ni, 352ppm Co, 0.28% Cu, 77ppb Pt+Pd from 224m that inc. 4m at 1.14% Ni, 501ppm Co, 803ppm Cu, 0.14g/t Pt+Pd from 224m and that inc. 5m at 0.61% Ni, 258ppm Co, 0.49% Cu, 32ppb Pt+Pd from 229 and inc. 7m at 1.52% Ni, 578ppm Co, 0.16% Cu, 0.17g/t Pt+Pd from 282m that inc. 5m at 1.92% Ni, 711ppm Co, 0.21% Cu, 0.18g/t Pt+Pd from 283m * Ending in mineralisation Commenting on the RC assay results, WMG Managing Director Dr Caedmon Marriott said: “The team are excited by these results, with MTRC046 showing the best high-grade intersection at the project, to date. Its further validation of the extensive Mulga Tank nickel sulphide mineral system and the potential the Complex could hold. The more we drill the more we’ve become increasingly convinced of the hybrid nature of the system and potential to host higher grade massive sulphide. A very large, low-grade, open-pitable deposit has been defined within the Complex by the various phases of drilling so far but within that a number of these high grade pods/zones are starting to emerge as we increase drilling density. ASX:WMG www.westernmines.com.au 2 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu Also of note in these results is that all three holes fall outside the area of previous drilling used to define our JORC Exploration Target. Whilst the mineralisation in holes MTRC044 and MTRC045 wasn’t quite as robust as recent results for the core area, they certainly contain significant mineralisation and demonstrate the system remains open to the south. We’ll follow-up on hole MTRC046 with DHEM and further RC and diamond drilling in this area.” Figure 1: Phase 3 assay results for disseminated nickel sulphide mineralisation MTRC044 to MTRC046 MULGA TANK RC DRILLING PROGRAM Exploration results from the Company’s various drilling programs at the Mulga Tank Project over the last 12 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. ASX:WMG www.westernmines.com.au 3 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu 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. HIGH MGO ADCUMULATE DUNITE Assay results for MTRC044 averaged 46.9% MgO and 0.48% Al2O3 (volatile free) over the 225m ultramafic portion of the hole, MTRC045 averaged 47.5% MgO and 0.30% Al2O3 (volatile free) over 228m of ultramafic and MTRC046 averaged 45.5% MgO and 0.42% Al2O3 (volatile free) over 236m 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. NICKEL SULPHIDE MINERALISATION Broad intersections of visible disseminated nickel sulphide mineralisation were observed and logged in the Phase 3 RC program. 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 MTRC044 to MTRC046 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 7). ASX:WMG www.westernmines.com.au 4 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu 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. MTRC044 33m at 0.28% Ni, 108ppm Co, 25ppm Cu, 3ppb Pt+Pd from 102m 50m at 0.29% Ni, 120ppm Co, 20ppm Cu, 5ppb Pt+Pd from 139m inc. 4m at 0.39% Ni, 157ppm Co, 35ppm Cu, 6ppb Pt+Pd from 184m 104m at 0.27% Ni, 125ppm Co, 43ppm Cu, 14ppb Pt+Pd from 196m* inc. 8m at 0.40% Ni, 161ppm Co, 104ppm Cu, 19ppb Pt+Pd from 277m Cumulative 187m at 0.28% Ni, 121ppm Co, 34ppm Cu, 10ppb Pt+Pd with S:Ni 0.8* * Ending in mineralisation Figure 2: MTRC044 Cu and Pt+Pd Figure 3: MTRC044 S:Ni Ratio MTRC045 113m at 0.26% Ni, 116ppm Co, 55ppm Cu, 10ppb Pt+Pd from 115m 61m at 0.32% Ni, 142ppm Co, 37ppm Cu, 22ppb Pt+Pd from 239m* inc. 10m at 0.47% Ni, 191ppm Co, 60ppm Cu, 29ppb Pt+Pd from 280m Cumulative 174m at 0.28% Ni, 125ppm Co, 49ppm Cu, 14ppb Pt+Pd with S:Ni 0.7* * Ending in mineralisation ASX:WMG www.westernmines.com.au 5 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu Figure 4: MTRC045 Cu and Pt+Pd Figure 5: MTRC045 S:Ni Ratio MTRC046 193m at 0.33% Ni, 152ppm Co, 310ppm Cu, 25ppb Pt+Pd from 107m S:Ni 1.5* inc. 1m at 0.80% Ni, 355ppm Co, 0.12% Cu, 78ppb Pt+Pd from 182m and inc. 10m at 0.81% Ni, 352ppm Co, 0.28% Cu, 77ppb Pt+Pd from 224m that inc. 4m at 1.14% Ni, 501ppm Co, 803ppm Cu, 0.14g/t Pt+Pd from 224m and that inc. 5m at 0.61% Ni, 258ppm Co, 0.49% Cu, 32ppb Pt+Pd from 229 and inc. 7m at 1.52% Ni, 578ppm Co, 0.16% Cu, 0.17g/t Pt+Pd from 282m that inc. 5m at 1.92% Ni, 711ppm Co, 0.21% Cu, 0.18g/t Pt+Pd from 283m * Ending in mineralisation ASX:WMG www.westernmines.com.au 6 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu Figure 6: MTRC046 Cu and Pt+Pd Figure 7: MTRC046 S:Ni Ratio DISCUSSION Holes MTRC044 to MTRC046 were designed to test to the south of previous drilling and in particular to followup on holes MTRC032 and MTRC038, which returned high-grade results at the southern extent of the Phase 2 program. All three holes are located outside of the area used in our JORC Exploration Target work, which was constrained and modelled based on Phase 1 drilling (ASX, Mulga Tank JORC Exploration Target, 5 February 2024). The results demonstrate the system remains open to the south with all three holes showing broad intersections of disseminated nickel sulphide mineralisation containing high sulphur, S:Ni and chalcophile element (Cu and PGE’s) results - highlighting a larger system than that modelled in the Exploration Target. MTRC046 is one of the best holes drilled to date across the various phases of drilling, containing both strong disseminated mineralisation 193m at 0.33% Ni, 152ppm Co, 310ppm Cu, 25ppb Pt+Pd from 107m with S:Ni of 1.5 (ending in mineralisation), along with intersections of higher grade material, returning 4m at 1.14% Ni, 501ppm Co, 803ppm Cu, 0.14g/t Pt+Pd from 224m, 5m at 0.61% Ni, 258ppm Co, 0.49% Cu from 229m and 5m at 1.92% Ni, 711ppm Co, 0.21% Cu and 0.18g/t Pt+Pd from 283m. This hole is located on the very southern edge of the area tested to date, confirming mineralisation to be open in this direction. ASX:WMG www.westernmines.com.au 7 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu A number of holes across the three RC programs have returned higher grade assay results between 1% to 4.5% Ni. These intervals have generally only been logged as matrix to semi-massive sulphide in RC chips, highlighting the high tenor of the sulphide system. A cluster of these results, over ~600m strike, occur within the central core area of the Mulga Tank Complex (Figure 10) including: MTRC007 1m at 1.58% Ni, 574ppm Co, 708ppm Cu, 39ppb Pt+Pd from 197m MTRC023 1m at 1.14% Ni, 455ppm Co, 232ppm Cu, 94ppb Pt+Pd from 220m MTRC024 1m at 1.28% Ni, 890ppm Co, 427ppm Cu, 37ppb Pt+Pd from 202m 3m at 2.19% Ni, 777ppm Co, 597ppm Cu, 9ppb Pt+Pd from 253m that inc. 1m at 4.51% Ni, 0.16% Co, 0.14% Cu, 16ppb Pt+Pd from 253m MTRC032 1m at 1.08% Ni, 602ppm Co, 379ppm Cu, 83ppb Pt+Pd from 131m 6m at 1.01% Ni, 443ppm Co, 0.32% Cu, 0.12g/t Pt+Pd from 254m MTRC038 4m at 1.09% Ni, 404ppm Co, 0.43% Cu, 71ppb Pt+Pd from 133m 2m at 1.00% Ni, 397ppm Co, 0.10% Cu, 0.44g/t Pt+Pd from 169m 1m at 3.16% Ni, 662ppm Co, 385ppm Cu, 0.18g/t Pt+Pd from 192m Figure 10: Cluster of >1.0% Ni assay results within the core of the Mulga Tank Ultramafic Complex ASX:WMG www.westernmines.com.au 8 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu Figure 11: Cross section NW-SE through the Mulga Tank Ultramafic Complex Exploration at the Mulga Tank Project continues to demonstrate an extensive nickel sulphide mineral system, with numerous ~200m disseminated sulphide intersections within the core area of the Complex. In addition to this, all the necessary geological processes are working to produce high-grade/high-tenor massive sulphide material, with numerous zones now intersected. These latest results from hole MTRC046 add further conclusive evidence that Mulga Tank is not just a Type 2 disseminated sulphide system and is more likely a Perseverancestyle hybrid Type 1/2 system with a high-grade massive sulphide components. This augurs well for the potential grade and tenor of further intersections of high-grade massive sulphide mineralisation that could be discovered. Each phase of drilling continues to build our understanding of the Mulga Tank Complex. 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, being completed over the next couple of weeks. 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 9 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu APPENDIX HoleID From (m) To (m) Interval (m) Ni (%) Co (ppm) Cu (ppm) Pt + Pd (ppb) MTRC044 102 135 33 0.28 108 25 3 MTRC044 139 inc. 184 189 188 50 4 0.29 0.39 120 157 20 35 5 6 MTRC044 196 inc. 277 300 285 104 8 0.27 0.40 125 161 43 104 14 19 MTRC045 115 228 113 0.26 116 55 10 MTRC045 239 inc 280 300 290 61 10 0.32 0.47 142 191 37 60 22 29 MTRC046 107 inc. 224 that inc. 224 which inc. 225 and inc. 229 inc. 282 that inc. 283 300 234 228 227 234 289 288 193 10 4 2 5 7 5 0.33 0.81 1.14 1.47 0.61 1.52 1.92 152 352 501 643 258 578 711 310 2842 803 920 4896 1608 2106 25 77 139 152 32 173 183 Table 1: Significant intersections holes MTRC044 to MTRC046 Significant intersections generally defined with cut-off >0.15% Ni coincident with >0.10% S Medium grade intersections defined with cut-off >0.30% Ni and higher grade >1.0% Ni Very minimal inclusion of unmineralised material below mineable width HoleID Easting (MGA51) Northing (MGA51) Total Depth (m) Azimuth Dip MTRC044 520500 6688500 300 270 -70 MTRC045 520700 6688500 300 270 -70 MTRC046 520900 6688500 300 270 -70 Table 2: Collar details for holes MTRC044 to MTRC046 Note: ASX Announcement - Phase 3 RC Results Yield Broad Sulphide Mineralisation Zones, 13 September 2024 A typographical error has been noted on the front page in our previous ASX announcement regarding Phase 3 assay results. The units for PGE results in some intervals in the highlights section were incorrectly quoted as “ppm Pt+Pd” rather than “ppb Pt+Pd”. They are correct throughout the rest of the announcement and in the Appendix table. If the Company does intersect significant PGEs we will report them in g/t. ASX:WMG www.westernmines.com.au 10 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu 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: 19.20m Share Price: $0.235 Market Cap: $20.01m 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 11 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu 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 12 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu 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 was collected using independent or alternative company personnel. Ocris logging system on a laptop computer, • The use of twinned holes. • Significant reported assay results were verified by multiple alternative company personnel • Documentation of primary data, data entry procedures, data verification, data storage (physical • All logging and assay data was compiled into and electronic) protocols. a SQL database server • Discuss any adjustment to assay data. www.westernmines.com.au 13 ASX RELEASE | MTRC046: TWO HIGH-GRADE ZONES INC 5M AT 1.92% Ni 0.21% Cu Criteria Location of data points Data spacing and distribution JORC Code explanation Commentary • Acc