Announcement PDF ASX:WCE ANNOUNCEMENT 11th June 2025 SHALLOW HIGH GRADE MINERALISATION IDENTIFIED IN FIRST 2 HOLES OF DRILLING PROGRAM Highlights • Hole 25WCDD001 intersected: • 5m at 313g/t Silver (Ag) from 20m; and • 5m at 2822g/t Ag from 26m; including • 2m at 6951g/t Ag from 27m • Hole 25WWCDD002 intersected 12m at 153g/t Ag from surface; including • 1m at 973g/t Ag from 1m • Silver mineralisation starts at surface in both holes (Appendix B – pXRF Results) • Drill holes were strategically designed to test high-grade, shallow silver targets. • Half-core samples dispatched to laboratory for assay; results expected in 6–8 weeks. High grade nature of samples necessitate more comprehensive laboratory analysis • Systematic core logging underway to improve understanding of structural and lithological controls. West Coast Silver Limited (ASX: WCE) (‘West Coast Silver’ or the ‘Company’) is pleased to advise that its inaugural diamond drill program at the high-grade Elizabeth Hill Silver Project in the Pilbara has delivered a strong start, with shallow, high-grade silver intersected in core from the first two drill holes, 25WCDD001 and 25WCDD002, based on portable XRF (pXRF) readings1. Cautionary Statement pXRF results should not be considered a proxy for quantitative laboratory analyses which are required to determine the actual abundance and grade of the mineralisation. The mineralised core intervals referenced in this announcement have been appropriately and systematically sampled and dispatched to ALS Global laboratories for quantitative analysis the results of which and will be reported once results are received. 1 Refer to cautionary statement WEST COAST SILVER LIMITED ASX | WCE ACN: 155 472 834 REGISTERED OFFICE Level 2, 10 Ord Street West Perth, WA 6005 PO Box 1227, West Perth WA 6872, Australia info@westcoastsilver.com.au +61 8 9322 3383 westcoastsilver.com.au ASX:WCE ANNOUNCEMENT 11th June 2025 Both holes intersected mineralisation2 from surface, with particularly impressive results from hole 25WCDD001 which intersected: • • 5m at 313g/t Ag (10oz/t) from 20m; and 5m at 2822g/t Ag (90.7oz/t) from 26m; including o 2m @ 6951g/t Ag (223.5oz/t) from 27m. Hole 25WWCDD002 intersected • 12m at 153g/t Ag (4.9oz/t) from surface; including o 1m at 973g/t Ag (31.3oz/t) from 2m These initial holes were strategically selected to test the potential for shallow, high-grade mineralisation. Anomalous Lead, Zinc and Copper values have also been returned, and further analysis will be carried out during the inaugural drill program to quantify the presence of these elements and their impact on project economics. Refer to Appendix B – pXRF Results for full results of other elements. Commenting on the results, Executive Director Bruce Garlick said: “We are extremely pleased with this exceptional start to our maiden drill program. To intersect highgrade silver from surface in our first two holes is a tremendous result and validates our belief in the nearsurface potential at Elizabeth Hill. The grades seen in 25WCDD001 are particularly encouraging and point to a strong future for the project.” Figure.7.‗.Plan.view.of.completed.drillholes........ 2 Refer to cautionary statement WEST COAST SILVER LIMITED ASX | WCE Page 2 ASX:WCE ANNOUNCEMENT 11th June 2025 Figure 2 - Section view of significant intercepts greater than 50g/t – Refer to Appendix B – pXRF Results for full details3 Geological Interpretation Drill core from both holes has been systematically logged, with particular attention being paid to structural and lithological features to improve the geological understanding of the silver mineralisation. Previous drilling at Elizabeth Hill intersected a high-grade silver vein network with an associated polymetallic mineralised halo which includes copper, lead and zinc hosted in chalcopyrite, galena, arsenopyrite and sphalerite. In addition to pervasive malachite observed in the core of the hydrothermal vein system. Core recovery has been in excess of 95% and successful core orientation has allowed detailed structural measurements of the near surface mineralisation. Furthermore, holes 25WCDD001 and 002 have traversed a sparsely drilled section of the deposit, highlighting previously unidentified structural trends. The information gathered from these holes is providing valuable information which will enable key decisions to be made for the remainder of the drill program. 3 Refer to cautionary statement WEST COAST SILVER LIMITED ASX | WCE Page 3 ASX:WCE ANNOUNCEMENT 11th June 2025 Laboratory Testing The core has been cut, and half-core samples have been sent for confirmatory laboratory assays, which are expected to be returned within 6–8 weeks. An analysis of pXRF v assay results will be carried out when results are received to demonstrate any variances between pXRF results and laboratory analysis. The diamond drill program continues at Elizabeth Hill, with further holes planned to test down plunge and extensional targets. Regional Exploration Update Regional fieldworks including soil sampling has recently concluded with all samples being sent to the lab for assessment. Lab results are being received progressively with a consolidated model being built to define next steps An updated Programme of Works (PoW) has recently been approved by DEMIRS to facilitate additional field exploration work including trenching on near mine and regional targets. Figure.9.‗.Drilling.continues.at.Elizabeth.Hill WEST COAST SILVER LIMITED ASX | WCE Page 4 ASX:WCE ANNOUNCEMENT 11th June 2025 The Elizabeth Hill Project Elizabeth Hill is one of Australia’s high-grade silver projects and has a proven production history outlined below: • High grades enabled low processing tonnes: 1.2Moz of silver was produced from just 16,830t of ore at a head grade of 2,194g/t (70.5 oz/t Ag)4 • Previous mining operation ceased in 2000: because of low silver prices (US$5)5 • Simplistic historical processing technique: native silver was recovered via low-cost gravity separation techniques • Untapped potential remains in ground with deposit open at depth and recent consolidation of land package offers potential to discover more Elizabeth Hill style deposits. • Tier 1 Mining Jurisdiction located on a mining lease with potential processing option at the nearby Radio Hill site. Figure.0.‗.Tenement.Location Through the consolidation of the surrounding land packages into a single contiguous 180km2 package significant exploration and growth potential exists both near mine and regionally. The land package holds a significant portion of the Munni Munni fault system which is considered prospective for Elizabeth Hill look-a-like silver deposits. 4 WAMEX Annual Report,1 April 2014 to 31 March 2015, Elizabeth Hill Silver Project, Global Strategic Metals NL, p16 5 www.kitco.com/charts/silver WEST COAST SILVER LIMITED ASX | WCE Page 5 ASX:WCE ANNOUNCEMENT 11th June 2025 This ASX announcement has been authorised for release by the Board of Directors of West Coast Silver Limited. For further information, please contact: Bruce Garlick Executive Director West Coast Silver Limited E: info@westcoastsilver.com.au Competent Person Statement The information in this report that relates to Exploration Results is based on information compiled by Mr Rob Mosig a Competent Person who is a Fellow of the Australasian Institute of Mining and Metallurgy. Mr Mosig is a Director of West Coast Silver. Mr Mosig has sufficient experience that is relevant to the style of mineralisation and type of deposits under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’, and a Specialist under the 2015 Edition of the ‘Australasian Code for Public Reporting of technical assessments and valuations of mineral assets’. Mr Mosig consents to the inclusion in the report of the matters based on his information and in the form and context in which it appears. Forward-Looking Statements Statements in this announcement which are not statements of historical facts, including but not limited to those relating to the proposed transaction, are forward-looking statements. These statements instead represent management’s current expectations, estimates and projections regarding future events. Although management believes the expectations reflected in such forward-looking statements are reasonable, forward-looking statements are based on the opinions, assumptions and estimates of management at the date the statements are made and are subject to a variety of risks and uncertainties and other factors that could cause actual events or results to differ materially from those projected in the forward-looking statements. Accordingly, investors are cautioned not to place undue reliance on such statements. Cautionary Statement This document is confidential and may not be reproduced, redistributed or passed on, directly or indirectly. This document is neither a prospectus nor an offer to subscribe for fully paid ordinary shares. West Coast Silver and its directors, employees and consultants make no representations or warranty as to the accuracy, reliability or completeness of this document, and have no liability, including liability to any person by reason of negligence of, or contained in or derived from, or for any omissions from this document, except liability under statute that cannot be excluded. This document contains reference to certain targets and plans of West Coast Silver which may or may not be achieved. The performance of West Coast Silver may be influenced by a number of factors, uncertainties and contingencies, many of which are outside the control of the Company and its directors, staff and consultants. WEST COAST SILVER LIMITED ASX | WCE Page 6 ASX:WCE ANNOUNCEMENT 11th June 2025 Appendix A – Drill Collar Locations Hole ID Easting_m Northing_m Datum Azi Dip Depth (m) 25WCDD001 25WCDD002 487011.00 487023.00 7667939.00 7667944.00 GDA94z50 GDA94z50 91 165 62 75 47.20 90.50 Appendix B – pXRF Results Hole ID 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 Reading Depth (m) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 WEST COAST SILVER LIMITED Average Ag g/t 21.3 23.7 45.7 31 30.7 16 41.3 15 31.3 28 33 44.3 43.7 40 20.3 24.3 54.7 7 18 283.7 90.3 11.7 1127.3 54.7 12 49 8119.3 5783.3 77 82.3 0 ASX | WCE Average Pb ppm 168.7 159.3 537.7 72.7 38.3 46.7 472 40.3 4709 647 448.3 30.7 99.7 158 20741.7 1166 8194 6187.3 2254 1653.3 2885.7 1493.7 912.3 2626.7 683.7 2680.3 10924 157 67.3 31.7 83.3 Average Zn ppm 132.7 126.7 261 88 115.3 302.7 392.3 108.7 281.3 615.3 1052.7 48 246 180.7 3948.3 1230 3840.3 3416.3 899 883.7 1135 683 2013.7 1057.7 1200 1420 805.3 2441 106.7 110 163.3 Average Cu ppm 191 21.7 66.7 20.3 0 15.3 389 0 916 468.3 179 0 79.3 69.7 2052.7 287.7 2549 1622.3 343 276 412.3 345.7 1582.7 793.7 443 403.7 1114.3 638 53.7 46.3 99.7 Page 7 ASX:WCE ANNOUNCEMENT 11th June 2025 Hole ID 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD001 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 Reading Depth (m) 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 WEST COAST SILVER LIMITED Average Ag g/t 8 0 2.7 0 0 0 0 3.3 12 3 9.7 17 12.7 0 3.8 0 112.7 973.3 2.3 138 51.3 98 14 73.3 179.7 21 98.7 73.3 17.3 17.3 27.7 12.7 8.7 6.7 12.3 16 66.3 10 20.3 56.7 52.7 3 3 ASX | WCE Average Pb ppm 117.7 2.7 7.3 20.7 3.7 9.3 0 15.7 10.7 0 193.7 272.3 198.7 21.7 15.3 45.3 842.7 614 61 126 207 791 2172.7 4574 3323 363 1889.3 1980.3 3507.7 2515 2124.3 599.7 792 764.7 222.3 300 239.7 624.7 17 395.3 26.7 22 33 Average Zn ppm 222 151 104.3 421.3 157 176.3 128.3 44.3 147.7 105.3 444.7 303 157.7 41.3 81 34.7 489.3 892 287 123.3 306.7 735.7 1290.7 453.3 1013.7 867.7 1329.7 847 4299.3 2302.7 1634.3 837.3 1038.7 1325.7 1063.7 778.3 1150.7 1078 403.3 274 322 45 26.7 Average Cu ppm 2755 756 0 48 28 22 0 0 0 15 1772.3 1996.3 144.3 0 151.8 0 1729.3 1689.3 1476.3 533 1515.3 2163.3 1100.3 1609.7 862.3 1863.7 659 454.3 2110 1105 8122.7 1514 648 610 952.7 308.3 627.7 446.3 636.7 1060 3100.7 0 23 Page 8 ASX:WCE ANNOUNCEMENT 11th June 2025 Hole ID 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 Reading Depth (m) 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 WEST COAST SILVER LIMITED Average Ag g/t 9 12 2.7 2.3 0 3.3 3 0 4 0 3.3 3.7 7.3 0 0 0 0 0 0 0 0 0 0 0 11.7 3 2.3 0 0 0 0 0 2.7 0 3 0 0 5.7 0 2.3 0 0 2 ASX | WCE Average Pb ppm 40.3 17.7 145 159 12 6.7 3.3 2.3 7 155 26.7 31 11.3 5.7 0 24.3 15.3 23 15.3 22.3 9.3 0 17 13.7 19.3 177.3 676.3 72.7 54.7 98 122 129.3 156.3 17.7 475 27.7 15.3 16.7 15.3 505.7 10 30.3 25 Average Zn ppm 75.3 98.3 1293.3 70 118 104 53.7 153.3 92 179.7 78.3 140 186.7 171.7 145 68 114 39.7 72.3 113.7 70 40.7 107 210 102 2141 420.7 25.7 45.7 230.7 152.3 33.7 227.7 24 253 46.3 51 95 19.3 18583.7 58.3 105 26.7 Average Cu ppm 294.7 340 1010.7 797.7 0 223 0 82 12 25 16.7 28.3 0 0 0 37.3 0 25 0 0 185.3 0 0 0 9.3 99.3 20.3 8 0 60.3 8.3 0 6 0 0 0 0 111 0 353.7 0 34 6.7 Page 9 ASX:WCE ANNOUNCEMENT 11th June 2025 Hole ID 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 25WCDD002 Reading Depth (m) 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 WEST COAST SILVER LIMITED Average Ag g/t 0 0 2.7 0 0 2.3 0 0 3.3 5.3 0 0 0 2.3 2.7 0 0 0 0 0 ASX | WCE Average Pb ppm 134 33.7 27.7 44.7 60.7 23.7 23 37 38 19 20 25 43 31 35 27.7 127.3 25.3 31.7 30.7 Average Zn ppm 84.3 11 30 22 36.7 27 40.7 29.7 36.7 26.3 44.7 10.7 34 29 39 0 98.3 62.7 38 40 Average Cu ppm 54 0 0 0 0 0 0 12 27 8.3 12.3 0 0 0 0 0 109.3 0 5.7 0 Page 10 ASX:WCE ANNOUNCEMENT 11th June 2025 Appendix 3 JORC CODE, 2012 – TABLE 1 Section 1 Sampling Techniques and Data – Elizabeth Hill Inaugural Drill Program (Criteria in this section apply to all succeeding sections.) Criteria JORC Code explanation Sampling techniques • Drilling techniques Commentary Nature and quality of sampling (e.g. 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. • Portable XRF readings have been recorded on core samples at 1m intervals downhole. In zones of interest or where visually mineralized, the reading has been repeated 3 times with an average taken. • Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. • Portable XRF is calibrated daily along with CRM checks during analysis. • 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 (e.g. ‘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 (e.g. submarine nodules) may warrant disclosure of detailed information. • 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). • pXRF does not record temperature readings but ambient climate ranges from 22-27 deg Celsius. • Mineralisation determined via pXRF generally where Ag readings average <10g/t Ag. • A Reflex Omni X-42 North Seeking Gyro is used for downhole surveying of the drill holes and is calibrated prior to use, with readings taken at approximately every 15m. • Drilling was undertaken with a track-mounted LF90Ds with operational dip angles of -90̊ to -30̊ and capable of drilling HQ core to 600m. Core was recovered in a standard tube. All the core in this ongoing program is to be drilled HQ. • Core is orientated using Reflex ACT III HQ tool • Drillholes were surveyed downhole using an IMDEX TN14 Gyro and Compass WEST COAST SILVER LIMITED ASX | WCE Page 11 ASX:WCE ANNOUNCEMENT 11th June 2025 Criteria JORC Code explanation Commentary 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. • Core recovery was systematically recorded from the commencement of diamond coring to the end of hole, by reconciling against driller depth blocks, production plods and knowledge obtained from visual inspection. • Core recoveries typically averaged above 90% with isolated minor zones of lessor recovery. • No relationship has been established between core recovery and grade. There is no reason to expect any sampling bias. • Detailed core recovery data is maintained throughout the program as part of the geotechnical logging. Logging Subsampling techniques and sample preparation • 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. • 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 subsampling 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/secondhalf sampling. • Whether sample sizes are appropriate to the grain size of the material being sampled. WEST COAST SILVER LIMITED ASX | WCE • Diamond drill core is orientated and geologically and geotechnically logged by an experienced team of geologists and the data stored in a database. • All core logging is both qualitative and quantitative in nature. • Photographs are taken prior to the cutting and sampling of the core; core is wetted to improve the visibility of features in the photographs. • No new drill sample assay results are being reported. The portable XRF analyses are based individual or in some instances an average of 3 readings taken on the core at 1m intervals. The analyses were taken after the core was collected into core trays. • pXRF QAQC includes daily calibration and analysing 2 different CRM standards approx. every 20 samples. • Core analysis may introduce some sample variability and pXRF results are regarded as semi-quantitative at this stage. • 3 x 30 second readings are taken on each meter, just up-hole of the meter mark. An average concentration of the 3 readings is used for the final recorded analysis. • pXRF readings are only performed on dry drill core. Page 12 ASX:WCE ANNOUNCEMENT 11th June 2025 Criteria JORC Code explanation 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 (e.g., standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (i.e., lack of bias) and precision have been established. Verification of sampling and assaying Location of data points Commentary • The pXRF is an Olympus Vanta with the latest 2025 software and is calibrated daily. Analysis method uses 3 beam analysis set to 10 sec per beam for 30 second read time. • CRM is analysed every 20m of samples and has shown good repeatability. • Results from historic drill assays are being checked against pXRF results as applicable. • pXRF results show some bias of lower Ag grades compared to lab assays in these preliminary checks. • 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. • Accuracy and quality of surveys used to locate drill holes (collar and downhole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. • 2025 drill holes are located using handheld GPS, with accuracy to within 5m. Historic collars have been surveyed by DGPS in instances where they have been found. • Specification of the grid system used. • Quality and adequacy of topographic control. • 2025 drilling uses downhole gyro for surveys which is uploaded to the IMDEX HUB-IQ cloud based storage • pXRF data is exported digitally from devices for import into a digital database. • pXRF results are not assay data, but <LOD (No Detection) readings from pXRF have been changed to “0” to allow numerical interpretation of results. No other changes or calibrations have been applied to the data. An internal dilution factor of 50g/t over 1m has been applied in the determination of interval grade for the mineralised intervals. • A 0.5m DTM is used for topographic control. • Data has been collected in GDA95 / MGA Zone 50 Data spacing and distribution Orientation of data in relation to geological structure • Data spacing for reporting of Exploration Results. • pXRF data is reported per 1m sample lengths. • 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. • Samples have not been composited. Sample lengths reported reflect down hole drill sample lengths and aggregates of it. • Whether sample compositing has been applied. • Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. WEST COAST SILVER LIMITED ASX | WCE • 3 readings taken at each sample location, just up-hole of meter mark. • The drilling has an average dip of -61° across the program. The dip is designed to intersect the mineralisation most effectively and be able to penetrate the mineralised envelope fully, allowing calculation of ‘true thicknesses’. Page 13 ASX:WCE ANNOUNCEMENT 11th June 2025 Criteria JORC Code explanation • Commentary If the relationship between the drilling orientation and the orientation of key mineralized structures is considered to have introduced a sampling bias, this should be assessed and reported if material. • Angled drilling is being used to investigate cross-cutting mineralised structures, with assessment ongoing. • The drill orientation is not expected to have introduced any sampling bias. Sample security • The measures taken to ensure sample security. • Not relevant for portable XRF analysis taken on site. Audits or reviews • The results of any audits or reviews of sampling techniques and data. • No audits or reviews of the portable XRF sampling techniques and data has taken place. pXRF results are preliminary only and only lab assays will be used as quantitative analysis and in resource calculations. SECTION 2 REPORTING OF EXPLORATION RESULTS – MAVERICK SPRINGS SILVER GOLD PROJECT (Criteria listed in the preceding section also apply to this section.) Criteria Mineral tenement and land tenure status Exploration done by other parties Geology JORC Code explanation • Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings. • The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area. • Acknowledgment and appraisal of exploration by other parties. • Deposit type, geological setting and style of mineralisation. WEST COAST SILVER LIMITED ASX | WCE Commentary • The results reported in this announcement refer to core from holes drilled wholly on M47/342. • The tenement lies within the Ngarluma Native Title claim. • The tenement is in good standing with no known impediments. • The Elizabeth Hill deposit and adjoining area has been explored for Ni, Cu, PGM, base metals, Li and Ag mineralisation since 1968 when US Steel International Inc explored the area for base metals and nickel. • Massive silver was discovered in ~1994-1995 by Legend mining NL in a precussion hole drilling program. Further drilling followed and in 1997 and exploration shaft and drive was sunk by East Coast Minerals NL. • Underground mining at Elizabet Hill was conducted in 1999-2000 with additional drilling completed by East Coast Minerals NL until the project was sold to Global Strategic Metals NL in 2012. Alien Metals Ltd purchased lease M47/342 in early 2020. • The Elizabeth Hills silver mineralisation is structurally controlled and is located on the eastern boundary of the north-south trending Munni Munni Fault. Mineralisation has been intersected over a 100m north-south zone along the boundary of the Munni Munni Fault, plunging south along the Page 14 ASX:WCE ANNOUNCEMENT 11th June 2025 Criteria Drill hole Information Data aggregation methods Relationship between mineralisation widths and intercept lengths JORC Code explanation • A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes: o easting and northing of the drill hole collar o elevation or RL (Reduced Level – elevation above sea level in metres) of the drill hole collar o dip and azimuth of the hole o down hole length and interception depth o hole length. • If the exclusion of this information is justified on the basis that the information is not Material and this exclusion does not detract from the understanding of the report, the Competent Person should clearly explain why this is the case • In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (e.g., cutting of high grades) and cut-off grades are usually Material and should be stated. • Where aggregate intercepts incorporate short lengths of high-grade results and longer lengths of low-grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail. • The assumptions used for any reporting of metal equivalent values should be clearly stated • These relationships are particularly important in the reporting of Exploration Results. • If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported. • If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (e.g., ‘down hole length, true width not known’). WEST COAST SILVER LIMITED ASX | WCE Commentary granite contact. The zone has an east-west width of 15-20m with the highgrade core restricted to around 3m width in the region of the underground workings. The mineralised zone is separated into several pods and occurs within a quartz carbonate chalcedonic silica beccia that shows veining. The silver occurs in fine disseminations, needles, veins, nuggets and platelets up to several centimetres in diameter. • Drill information relevant to this release has been provided above in Appendix 1. • 2025 or historic drilling assay data referenced has previously been reported. • Length weighted portable XRF results have been compiled from raw data to highlight mineralized intervals. • Drill hole intersections are not true widths due to sub vertical