Announcement PDF ASX:WCE ANNOUNCEMENT 23rd May 2025 Mobilisation Commences for Inaugural Diamond Drilling Program at Elizabeth Hill Highlights • Mobilisation underway for West Coast Silver’s inaugural diamond drilling campaign at the Elizabeth Hill Project, WA • Drilling contractor West Core scheduled to be on site over the weekend of 24–25 May 2025, with drilling to commence the following week • Program to target extensional and down-plunge silver mineralisation, with a focus on expanding known high-grade zones • Use of portable XRF (‘pXRF’) technology on site to provide real-time elemental data and guide in-field decision-making • First significant drilling at Elizabeth Hill under West Coast Silver ownership, marking a key milestone in the Company’s exploration strategy West Coast Silver Limited (ASX:WCE) (‘West Coast Silver’ or the ‘Company’) is pleased to advise that mobilisation activities have commenced for the Company’s inaugural diamond drilling campaign at its flagship Elizabeth Hill Project, located in Western Australia. Drilling contractor West Core is currently making final preparations, with mobilisation to site scheduled for the weekend of 24–25 May 2025. Drilling operations are expected to commence in the following week. The West Coast Silver technical team has also been finalising preparations, both on-site and at the Company’s core logging and processing facility in Karratha, to ensure an efficient and well-supported start to the program. The upcoming drilling campaign will test both extensional and down-plunge targets associated with the known high-grade silver mineralisation at Elizabeth Hill. In addition to targeting potential mineralised extensions, the program aims to enhance geological understanding of the structural framework that hosts the Elizabeth Hill mineralised envelope. 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 23rd May 2025 Figure 1 - Elizabeth Hill Silver Mine Schematic To support real-time decision-making and optimise drill targeting, portable X-Ray Fluorescence (pXRF) technology will be utilised on site to deliver rapid elemental analysis during the course of the program. The Company looks forward to updating shareholders as drilling progresses and results become available. WEST COAST SILVER LIMITED ASX | WCE Page 2 ASX:WCE ANNOUNCEMENT 23rd May 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 (77.4 oz/t Ag)1 • Previous mining operation ceased in 2000: because of low silver prices (US$5)2 • 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.8.‗.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 repetitive silver deposits. 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 WEST COAST SILVER LIMITED ASX | WCE Page 3 ASX:WCE ANNOUNCEMENT 23rd May 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 an Advisor 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 4