Announcement PDF Elizabeth Hill Silver Project One of Australia's highest grade silver projects July 2025 ASX | WCE westcoastsilver.com.au Disclaimer 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. Competent Person Statement The information in this report that relates to Exploration Results or Mineral Resource 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 Ltd. 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. 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 Ltd (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 West Coast Silver and its directors, staff and consultants. July 2025 Australia’s Largest Silver Nugget, 140kg found at Elizabeth Hill • “The Karratha Queen” largest native silver nugget 145kg from Elizabeth Hill, on display at The Perth Mint. • Measures an impressive 85 x 38 x 47cm. • Contains approximately 3,520 ounces of silver . 2 A West Australian Silver Story Key Project Highlights 1. Proven Production • Located in the Pilbara, WA on a granted Mining Lease (ML). • Past production over only one year of 1.2Moz Ag from 16kt ore (~2,194 g/t Ag head grade)1. 2. Outstanding Geology • A major ultramafic complex with recent spectacular high-grade hits and standout silver specimens in first 2 assays of 12 holes3: • 21 metres at 1,047g/t Ag from 10 metres in 25WCDD001 • Project ceased operations in 2000 due to declining silver prices of ~US$5/oz2. • Spectacular grade of 1 metre at 15,071 g/t Ag from 27 metres in 25WCDD001 • Project potential now significant with 180km2 consolidated land package. • 15m at 723g/t Ag from 1 metre in 25WCDD002 • Surface sampling has also returned multiple high-grade silver (Ag) results up to 490g/t7 • Evidence of a significant silver mineral system. July 2025 3. Growth Potential • Mineralisation open at Elizabeth Hill to the north and south along highly prospective Munni Munni Fault . • Near surface open pit potential identified in most recent and historical drilling assessment • No systematic regional exploration carried out to explore for similar highgrade zones- consolidated land package now allows this . • High Grade readings pXRF readings recorded ~300m to the north and ~150m to the south of the known Elizabeth Hill mineralisation envelope7 4. Strong Market • Silver hit $39/oz July 11th 2025.4 • Silver deficit of 148.9Moz5 in 2024. • Growing industrial demand for silver 5,380% in the last ten years6. • Declining production and increased demand creating a structural deficit over last four years and forecast to continue. • Potential for repeat Elizabeth Hillstyle deposits in geology 3 Corporate Overview West Coast Silver I Positioned to meet soaring silver demand. Capital Structure Ownership Structure Shares on Issue 260,120,976 Share Price A$0.13 Market Capitalisation (undiluted1) A$33.815M Cash (at 31 March 2025 and securities on hand) A$2.3M + Capital raise completed in May 2025 Implied Enterprise Value (undiluted2) Top Twenty 48% Balance 52% Share Performance A$31.5M West Coast Silver (WCE) is focused on the expansion and development of the Elizabeth Hill Silver Project, in the Tier 1, West Pilbara province, supported by a platform of complementary indemand resource projects. The leadership team brings together deep expertise across geology, mining, finance, and exploration. With a surging silver commodity market WCE believes it has the right project, at the right time. 1. As of 18/07/25 2. Refer to Appendix for details of options and performance rights 4 1. Proven Production Western Australia The Historical Elizabeth Hill Silver Mine One of Australia’s highest grade silver mines. • Previous mining operation ceased abruptly in 2000: due to low silver price (US$5/oz)1. • High grades enabled low processing tonnes: 1.2 Moz of silver was produced from just 16,830t of ore at 2,194g/t (77.4 oz/t Ag)1. • Simple historical processing technique: native silver was recovered using low-cost gravity separation techniques capturing both fines and nuggets. • Untapped potential remains in and around the historic mine site, due to limited, ineffective drilling and now outdated geophysics. • No systematic exploration in almost 25 years: opportunity for new near-mine and regional discoveries. • Tier 1 Mining Jurisdiction with processing facility opportunity at nearby Radio Hill. July 2025 5 2. Outstanding Geology Spectacular silver intervals including 15,071g/t over 1m in first drill holes of 2025 campaign1 Hole ID Interval (m) Ag (g/t) Ag (Troy oz/t) From (m) 25WCDD001 21 1,047 35.66 10 8 2,632 84.65 22 25WCDD001 1 15,071 484.56 27 25WCDD002 15 723 23.45 1 3 2,639 84.87 1 Including 25WCDD001 and including 25WCDD002 Significant Intercept Table of the first two drill holes of West Coast Silver drilling Cross section showing drill hole 25WCDD001 (West Coast Silver) with historical drill results. July 2025 6 2. Outstanding Geology Shallow high grade silver intercepts from historic drilling demonstrates open pit potential1. Hole ID Interval (m) Ag (g/t) From (m) 21EHDD003 3.7 6,953 13 21EHDD003 5.7 6,503 19 21EHDD001 15 1,487 2 22AMC001 21 730 12 AMEHRC009 4 3,788 27 EC092 1 204 1 Significant Intercepts in historical drilling (see Image to right) Plan view of 2025 West Coast Silver Diamond core drilling and historical drilling July 2025 7 2. Outstanding Geology Open Pit Potential Cross Sections showing historical drilling July 2025 8 2. Outstanding Geology Open Pit Potential Cross Sections showing historical drilling July 2025 9 2. Outstanding Geology New Modelling being completed by ERM Updated geological model suggests potential for extensions to known mineralisation: • Munni Munni fault: considered prospective for repetitive silver deposits/pods. • High grade historic lodes: six lodes are recognised underground within the Historic Elizabeth Hill Mine mineralised envelope. • Basal Munni Munni Intrusion: the basal contact of Munni Munni Mafic Intrusion reports anomalous silver in soils over 2km strike. • Broader surface anomalies: numerous surface silver anomalies associated with NNE trending structures sympathetic to Munni Munni fault. July 2025 Silver lode exposed on 82m level during past mining operation at Elizabeth Hill mine. 10 N 3. Significant Growth Potential Definitive Plan to Target Three Distinct Exploration Avenues. A • Reprocessing & interpretation of data - COMPLETE Mine Resource Assessment B • Assessment of historical core & geophysics reprocessing - COMPLETE Historic Elizabeth Hill Silver Mine Schematic (Long Section – Looking West) Discovery Gossan MUNNI MUNNI ULTRAMAFIC COMPLEX Second Gossan ? Future Potential Open Pit* • Development of an Open Pit Resource • Near mine targeting for repeat silver lodes - UNDERWAY Near Mine Targeting S Based Contact Mineralisation* • Trenching & Additional Fieldwork - UNDERWAY • Geophysics & Geochemistry - UNDERWAY Future Potential Underground* • Mineralisation envelope is open C Regional Repeat Targeting • Regional (distal) targeting for new look-a-like Elizabeth Hill deposits within large 180km2 land package – see next slide – Targeting Study being completed 11 July 2025 11 3. Significant Growth Potential – Proven by recent works Where is the next Elizabeth Hill? • Silver assays of up to 490 g/t silver returned from float and rock chip sampling1 • Multiple samples also returned elevated copper (up to 0.42% Cu) and gold (up to 0.19 g/t Au) • Distribution of silver-rich float samples indicates potential for additional source areas to the north (~200-500m) and south (~200m) of the historic Elizabeth Hill high-grade silver mine • Follow up works have commenced on site including trenching and additional sampling works • Significant samples include: 1. 25EW06-062: 490 g/t Ag, 0.03 g/t Au, 0.17% Cu; 2. 25EW06-057: 316 g/t Ag, 0.19 g/t Au, 0.11% Cu; 3. 25EW06-063: 276 g/t Ag, 0.13 g/t Au, 0.14% Cu; 4. 25EW06-025: 179 g/t Ag, 0.42% Cu; and 5. 25EW06-064: 178 g/t Ag, 0.06% Cu; July 2025 Elizabeth Hill Surface Sampling Results . 12 3. Significant Growth Potential - Regional Where is the next Elizabeth Hill? • Multiple look-a-like geological structures with similar characteristics to Elizabeth Hill – untested. • Historical geochemistry carried out exploring for Lithium returned anomalous readings for Ag – all untested. • Walk up targets to explore for Elizabeth Hill style mineralisation. • Prospect for multiple Elizabeth Hill style mineralised bodies based on geological setting. • WCE has engaged ERM Consultants to complete a targeting study to identify high priority targets for future exploration – due for completion 3-4 weeks Elizabeth Hill Geologies Overview. July 2025 13 Value Pathway and Advancement Strategy Proven High Grade Silver Mineralisation with Key Upcoming Catalysts. Site Works Commenced Inaugural Drilling Program First Assays – 2 of 12 holes Remaining Assays 10 holes • Core Review • 12 hole DD programme • Proven High Grade • 10 additional holes as part of Inaugural drilling campaign • Soil Sampling commenced on regional targets 75% completed • Re-assaying of old materials for other elements Q2 2025 July 2025 • Targeting EH ore zone • Near Surface Material • Proven Shallow Mineralisation • Open Pit Potential • Structural Understanding July 2025 • Combination of shallow hole and testing for deeper mineralisation Near Mine Exploration & Development • Trenching • Shallow Auger Drilling • Geochemistry • Open Pit Quantification Follow on Drill Program Regional Exploration • Additional drilling at Elizabeth Hill • Mapping of high priority targets • Near mine drilling (Air Core & RC) targeting additional Elizabeth Hill Style deposits • Air Core Drilling August – December 2025 14 Board and Management Driven by a Highly Experienced Team With Intimate Asset Knowledge Technical and Corporate Advisory EXECUTIVE CHAIRMAN NON-EXECUTIVE DIRECTOR NON-EXECUTIVE DIRECTOR Mr Bruce Garlick Mr Thomas Reddicliffe Mr Robert Mosig Mr Garlick is a finance, governance, and accounting professional with experience across nickel, copper, lead, and PGM exploration, development, and operations. He has held senior roles globally, including at Normandy Mining (now Newmont), Platinum Australia, and MI Energy. He is currently a Non-Executive Director of Artemis Resources (ASX:ARV). Mr Reddicliffe is a geologist with over 40 years’ exploration and evaluation experience primarily focused on Australia. Mr Mosig is a geologist with over 50 years of corporate, technical and marketing experience in mining and exploration across gold, platinum, diamond and specialty metals. He was a founding director of Platina Resources and Helix Resources. July 2025 Fellow of the Australian Institute of Mining and Metallurgy. Current Chair of GreenTech Metals (ASX:GRE) and Non-Executive Director of Gibb River Diamonds (ASX:GIB). CONSULTANT Gerard O’Donovan ex Sun Silver (ASX:SS1) TECHNICAL ADVISOR Ian Stockton ERM Consultants 15 Thank you. Contact Information: Mr Bruce Garlick Executive Chairman bgarlick@westcoastsilver.com.au +61 437 393 6000 info@westcoastsilver.com.au ASX | WCE westcoastsilver.com.au References Page 3: 1. A West Australian Silver Story 1 WAMEX Annual Report, 1 April 2014 to 31 March 2015, Elizabeth Hill Silver Project, Global Strategic Metals NL, p16 2 www.kitco.com/charts/silver 3 Refer to West Coast Silver Ltd ASX announcement dated 17 July 2025 4https://www.mining.com/silver-price-soars-to-39-the-highest-since-2011/? 5 https://silverinstitute.org/silver-industrial-demand-reached-a-record-680-5-moz-in-2024/ 6 www.kitco.com/charts/silver 7 Refer to West Coast Silver Ltd ASX announcement dated 21 July 2025 Page 5: 1. Proven Production 1 www.kitco.com/charts/silver 2 WAMEX Annual Report, 1 April 2014 to 31 March 2015, Elizabeth Hill Silver Project, Global Strategic Metals NL, p16 Page 6&7: 2. Outstanding Geology 1 Refer to West Coast Silver Ltd ASX announcement dated 17 July 2025 Page 12: 3. Significant Growth Potential 1 Refer to West Coast Silver Ltd ASX announcement dated 21 July 2025 July 2025 17 Corporate Summary Options & Performance Rights Options & Performance Rights Number of securities Unlisted Options exercisable at $0.25 each expiring on or before 25 September 2025 1,500,000 Unlisted Options exercisable at $0.25 each expiring on or before 30 November 2025 1,500,000 Unlisted Options exercisable at $0.40 each expiring on or before 21 April 2026 2,000,000 Unlisted Options exercisable at $0.18 each expiring on or before 30 October 2026 3,525,000 Unlisted Options exercisable at $0.117 each expiring on or before 25 November 2027 1,200,000 Unlisted Options exercisable at $0.04 each expiring on or before 18 May 2028 11,000,000 Unlisted Options exercisable at $0.04 each expiring on or before 20 May 2028 8,437,500 Performance Rights Class B expiring on or before 21 April 2027 5,000,000 Performance Rights expiring on or before 18 May 2028 12,000,000 July 2025 18