Announcement • Jul 11
West Coast Silver Limited Elizabeth Hill High-Grade Silver Discovery West Coast Silver Limited received results from diamond drilling with high-grade silver and base metal intersections. The Company has also received significant assay results for the last 15 of 32 reverse circulation (RC) drill holes completed in May 2026 at the Elizabeth Hill Project (WCE 70%, Alien Metals 30%), located near Karratha in the Pilbara region of Western Australia. The 32 RC hole program (2,710m) targeted silver mineralisation north of the April 2026 maiden Mineral Resource Estimate (MRE), with results to date indicating significant extensions beyond the current resource envelope. Diamond drilling continues to test for extensions to, and infill of, the MRE, while economic studies of near-surface mineralisation are progressing towards a Scoping Study. Diamond drill hole 26WCDD029 was drilled targeting the potential continuation of high-grade silver mineralisation intersected in historical drilling from underground to the south and below the Elizabeth Hill Mine workings (UGD084: 7m @ 607g/t Ag from 57m2; including 2m @ 1,995g/t Ag from 61m3). 26WCDD029 intersected 3m @ 524g/t Ag from 183m; including 1.5m @ 1,039g/t Ag from 184.5m downhole depth. This intersection is 12m to the south of the UGD084 intersection. These drill intersections form part of a 50m long north-south, sub-horizontal, mineralised trend at depth beneath the mine workings that also includes a historical intersection of 4m @ 223g/t Ag from 190m in drill hole AG33, as well as other anomalous drill intersections with silver in the 5-50g/t Ag range. This mineralised trend is on the contact between granite and ultramafic rocks that sit to the east, and offset, from the main Munni Munni Fault Zone (MMFZ). Previous drilling has concentrated on testing the vertical MMFZ in this area and as a result this target trend is poorly drilled with most of the holes passing above this sub-horizontal trend to penetrate the MMFZ to the west. Controls on this trend are poorly constrained. There is potential for more mineralisation hosting/controlling, structural splays sub-parallel to the MMFZ intersecting the granite-ultramafic lithology contact east of the main MMFZ. Where hole 26WCDD029 passed through the MMFZ at depth it did not encounter any significant silver mineralisation. Other deep drilling around the MMFZ in holes 26WCDD026 and 26WCDD028 returned intersections anomalous in silver within the MMFZ. The most significant of these was 1m @ 18g/t Ag from 210m in hole 26WCDD026. 26WCDD028 did not return any significant assay results. 26WCDD026 was drilled to test the MMFZ at depth south of the mine workings, and is the southernmost hole drilled by WCE to date. 26WCDD028 was drilled to test the MMFZ at depth beneath the mine workings. Hole 26WCDD027 was drilled to target the borehole electromagnetic (BHEM) conductivity anomaly modelled from the BHEM survey conducted in hole 25WCDD025 in April this year. It did not intersect any significant mineralisation to explain the conductivity model. However, the hole did intersect a broad section of anomalous copper (individual assays ranging from 0.11% to 0.45%), coincident with trace sulphides in ultramafic rocks from 34m to 56m downhole depth. Drill hole 26WCDD029 also intersected massive sulphides from 154.87m with 0.45m @ 2.73% Ni, 0.93% Cu and 0.7g/t Pd, hosted in ultramafic lithologies within the basal Munni Munni Intrusive Complex (MMIC) igneous suite. Historical underground drill hole UGD085 in this area intersected sulphide mineralisation (1m @ 2.33% Ni, 0.6% Cu from 52m4) also within ultramafic rocks on the contact with the granite. These intersections are in the vicinity of the BHEM conductivity anomaly identified in 25WCDD025 that was remodelled with information from 26WCDD027. This strongly suggests the conductivity feature relates to similar sulphides in ultramafic rocks of the MMIC. Announcement • Jun 30
West Coast Silver Limited Commences District-Scale Geophysics Program at Elizabeth Hill Silver Project West Coast Silver Limited commenced a geophysical survey campaign at its Elizabeth Hill silver project in the Pilbara region of Western Australia. The program is designed to test approximately 4 km of the Munni Munni Fault Zone for potential repeats of the high-grade Elizabeth Hill silver system, which historically produced 1.2 Moz of silver at a head grade of 2,194 g/t Ag. Extensive Induced Polarization (IP) and Controlled-Source Audio-frequency Magneto-Tellurics (CSAMT) geophysical survey program is commencing over approximately 4 km of strike of the Munni Munni Fault Zone, targeting potential repeats of the high-grade Elizabeth Hill silver system. Planned geophysical work follows successful IP testing at Elizabeth Hill Mine, where surveying identified a chargeability response coincident with the known Elizabeth Hill mineralised envelope, supporting IP as an effective tool for silver and base metal exploration. West Coast Silver Limited has successfully applied for and received a AUD 114,312 grant from the Western Australian Exploration Incentive Scheme (EIS) co-funded geophysics program, covering 50% of the cost of the ground geophysical program. The geophysical surveys cover numerous target areas delineated from surface mapping, soil geochemistry, structural analysis, and drone magnetic surveying. Contract signed with Southern Geoscience Consultants and Zonge Engineering & Research Organisation to commence as soon as field crews are available. Any anomalies detected by the Third Quarter 2026 geophysical surveys may be prioritised for follow-up in late Third Quarter and Fourth Quarter as part of West Coast Silver Limited’s initiative to define additional stand-alone Elizabeth Hill silver ‘pearls’ along the Munni Munni Fault Zone. Diamond drilling continues to test the Elizabeth Hill Mine for extensions to, and infill of, the April 2026 Elizabeth Hill Mineral Resource Estimate, with economic studies of near-surface mineralisation progressing towards a Scoping Study. IP and CSAMT techniques are planned to be surveyed concurrently and between them provide the opportunity to test the Munni Munni Fault Zone to greater depth than has previously been explored in the region. The survey coverage will test the entire Munni Munni Fault Zone between the Munni Munni and Maitland Intrusive Complexes, covering numerous geological, structural, geochemical and geophysical targets previously identified as Elizabeth Hill Silver Mine analogues having potential for silver mineralisation. The planned survey follows successful testing of IP over the Elizabeth Hill Silver Mine. The test survey lines completed over the Elizabeth Hill Mine show IP identifying a geophysical chargeability response coincident with the Mineral Resource Estimate mineralised envelope. The Elizabeth Hill Project is one of Australia’s high-grade silver projects and has a proven production history. High grades enabled low processing tonnes. A total of 1.2 Moz of silver was produced from just 16,830t of ore at a head grade of 2,194g/t (70.5 oz/t Ag). Mining operations ceased in 2000 as a result of low silver prices (USD 5 per ounce). Simplistic historic processing techniques were used focussing only on native silver extraction. Native silver was recovered via low-cost gravity separation techniques. Untapped mineral resource expansion potential remains. The Elizabeth Hill deposit remains open at depth and along strike. Recent consolidation of the West Coast Silver Limited tenement land holding offers potential to discover more Elizabeth Hill style deposits near mine and regionally. Among the world’s highest silver grades located on a mining lease with potential processing option at the nearby Radio Hill site. Through the consolidation of surrounding land packages into a single contiguous 180km2 package, significant exploration and growth potential has been created 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 silver deposit analogues. Reporting results from trial induced polarisation (IP) surveys undertaken during April 2026. Geophysical data was collected from a single approx. 525 x 625m dipole and surveying completed on 25m stations along 4 survey lines at the Elizabeth Hill deposit. IP instrumentation calibration was undertaken by the contractor (Southern Geoscience Consultants). IP surveying was acquired with the following specifications: Contractor: SGC; Transmitter: Phoenix TXU-30, 20kw Transmitter; Receiver: SMARTem24, multi-channel, 24bit receiver system; Base Frequency: 0.125Hz; Dipole Size: ~525x625m; Station Spacing: 25m; Line Spacing: 25m. All geophysical data is recorded and stored on West Coast Silver Limited’s file backup systems. Geophysical consultant (Southern Geoscience Consultants) with particular expertise in IP data interpretation checked and quality controlled all data output as it was gathered and interpreted the results using specialised software. The IP survey was conducted by an experienced external contractor and the data interpreted and plates generated by an experienced geophysical consultant, Russell Mortimer. It is supported by coincidence of the IP anomalies with geological envelopes generated by West Coast Silver Limited. The Elizabeth Hill silver mineralisation is structurally controlled and is located at the contact of the ultramafic Munni Munni intrusion to the east and Archaean gneisses and granites to the west. This contact is occupied by 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 granite contact. The zone has an east-west width of 15-20m with the high-grade 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 breccia that contains carbonate and quartz veins. The silver occurs in fine disseminations, needles, veins, nuggets and platelets up to several centimetres in diameter. Further work will include but not limited to Air Core drilling, RC Drilling, Diamond Drilling, Surface geophysical surveys and borehole geophysical surveys. Announcement • Jun 18
West Coast Silver Limited Announces Elizabeth Hill District Exploration Model Update West Coast Silver Limited announced the results of a mineral deposit review by 5-Element mineral system specialist David Lewis, focused on the Elizabeth Hill Silver Project in Western Australia. The Review proposes that silver mineralisation at Elizabeth Hill is best interpreted as pods of high-grade mineralisation developed within a structurally controlled vein network along major fault systems, displaying key characteristics consistent with 5-element (Ag-As-Co-Ni-Bi) vein systems. While Elizabeth Hill shares geological characteristics with major 5-Element deposits, insufficient exploration has been completed to determine if similar scales or repetition of mineralisation exist within WCE tenements. 5-Element deposits are hydrothermal vein systems characterised by the association of silver with cobalt, nickel, arsenic and bismuth (Ag-As-Co-Ni-Bi), commonly occurring as native elements (especially silver) and as sulphide, sulpho-arsenide and arsenide minerals. Other associations can include uranium, mercury, antimony, copper, lead, zinc and sulphur. 5-Element systems are commonly associated with mafic to ultramafic intrusive rocks and/or black shales. The metal-rich black shales are generally considered to be the metal source (eg. Cobalt, Kongsberg, Erzgebirge deposits), and the mafic/ultramafic rocks provide a mechanical/chemical trap for the hydrothermal veins (e.g. Elizabeth Hill, Cobalt, Kongsberg, Bou Azzer). Generally, the vein deposits form where the mafic/ultramafic rock contacts are cut or deformed by folds or faults. Repeated intersections with these structures and mafic/ultramafic rock contacts can produce multiple deposits. Several orientations of mineralised veins commonly cluster in these deposits, with a main vein orientation and secondary branching extensional veins. Individual 5-Element vein deposits generally have a small footprint compared to other deposit types, but grades are significantly richer. For example, Mexican or Peruvian silver epithermal veins can extend for 1-2 km with grades averaging ~300 g/t Ag. In contrast, vein systems in Cobalt, Canada, generally extend for 100-200 m but may average 2,000-5,000 g/t Ag. 5-Element vein systems also tend to repeat (pinch and swell) along the trend of structures, creating additional deposits and multiplying the potential silver production. Both Epithermal and 5-Element deposit types can produce significant (=10 Moz) silver, but the 5-Element deposits require less rock processing but are more difficult to locate through exploration due to their target size. The mineralising system at Elizabeth Hill is dominated by silver, but there is generally a positive association of arsenic, cobalt and base metals with the silver mineralisation. The grades of arsenic, cobalt, nickel and bismuth are lower than other 5-element mining districts, but this unusual correlation is a key factor of the deposit type. It is worth noting that the relative ahundance of these elemente varies considerably between 5-Element districts worldwide. 
