Announcement PDF ASX:WCE ANNOUNCEMENT 2nd September 2025 Intensified field exploration recommences at Elizabeth Hill following inaugural drilling success Highlights • Phase 2 Exploration ramping up at Elizabeth Hill. • Mapping of high priority near mine exploration targets has commenced • Exploration planning well advanced for next phase of drilling • Phase 2 Drilling anticipated to commence in ~6 weeks • Quantification of near surface mineralisation ongoing • Discussions commenced regarding the condition assessment and works required at Radio Hill processing plant owned by Artemis Resources (ASX:ARV) to process Elizabeth Hill material West Coast Silver Limited (ASX: WCE) (‘West Coast Silver’ or the ‘Company’) is pleased to advise that it has recommenced a high intensity exploration campaign at the high-grade Elizabeth Hill Silver Project in the Pilbara following the completion of its inaugural drilling campaign. Exploration Ramp Up The Company’s last few month’s activities, which included completion of its inaugural drilling campaign (containing high grade shallow silver intercepts of 1,615 g/t over 13m in 25WCDD0111 including 2m at 10,049 g/t) and its oversubscribed $6M placement West Coast have fast-tracked the start of an intensive exploration campaign at Elizabeth Hill and the surrounding near mine and regional targets. The Company is being supported in its exploration efforts by geologists from ERM Technical Mining Services Consultants, with Max Nind appointed as the interim WCE Chief Geologist, and structural geologist, Dr Peter Neumayr, guiding the exploration. Exploration at the Elizabeth Hill Silver Project has already commenced with Dr Neumayr mobilised to site to commence field mapping around Elizabeth Hill as well as at the previously reported 12 high priority near mine exploration targets2. Upcoming exploration activities in parallel to the detailed mapping will involve a drone magnetics survey aimed at acquiring high resolution magnetic data along the Munni Munni Fault. This survey aims to identify magnetic signatures that are comparable to those associated with the silver mineralisation at the Elizabeth Hill mine. 1 Refer to ASX Announcement dated 22nd August 2025 2 Refer to ASX Announcement dated 5th August 2025 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 2nd September 2025 Drill targeting is also well advanced in order to further quantify the near surface silver mineralisation at the mine site. The upcoming drilling campaign will also include testing of deeper targets in and around Elizabeth Hill to confirm down dip potential. Drilling tenders have been received, and a drilling contract will be signed in the near term. ERM is concurrently progressing works required to quantify the near surface potentially open-pittable mineralisation at the Elizabeth Hill mine site. Discussions are also being progressed with Artemis Resources (ASX:ARV) with regards to the Radio Hill processing plant to assess the existing infrastructure as a potential option for the future processing of Elizabeth Hill material. Radio Hill has previously been upgraded including the installation of a “Gekko Plant” which has not been utilised. Further upgrade works and modifications may be required, and this will be determined as part of the assessment works. Commenting on the exploration, Executive Chairman Bruce Garlick said: “The West Coast Silver team are focused on implementing a systematic technical approach to identify and prove up the near surface mineralisation identified in our initial drilling as well as numerous high priority targets identified by ERM. The work will feed into planning the next drill program at the Elizabeth Hill project area We are delighted to welcome Max Nind as our Chief Geologist, and our current structural geologist Dr Peter Neumayr”. “We are in a great position as a company with a healthy cash balance and highly experienced team to unlock the value at Elizabeth Hill.” Figure 1 WCE exploration team at Elizabeth Hill, including Chief Geologist Max Nind, ERM Structural Geologist, Dr Peter Neumayr and Site Supervisor, Mick Sutherland WEST COAST SILVER LIMITED ASX | WCE Page 2 ASX:WCE ANNOUNCEMENT 2nd September 2025 Figure 1 - Area of proposed drone magnetic survey with high priority prospects3 that will be comprehensively mapped and investigated for future exploration activities. 3 Refer to ASX announcement dated 5th August 2025 for prospect descriptions. WEST COAST SILVER LIMITED ASX | WCE Page 3 ASX:WCE ANNOUNCEMENT 2nd September 2025 ELIZABETH HILL SILVER 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 2 - Tenement Location Through the consolidation of the surrounding land packages into a single contiguous 180km 2 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, and other fault systems subparallel to the Munni Munni fault system, which are 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 4 ASX:WCE ANNOUNCEMENT 2nd September 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 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 5