Diamond Drilling Targeting High-Grade Silver

Diamond Drilling Targeting High-Grade Silver Extensions Beneath Elizabeth Hill Mine

Alien Metals Limited (AIM: UFO), a minerals exploration and development company, is pleased to advise that its joint venture partner, West Coast Silver Limited (ASX: WCE) ("West Coast" or "West Coast Silver"), has announced that an 1,500m diamond drilling (DD) programme is to commence in early April 2026 at the Elizabeth Hill Silver Project near Karratha, in the Pilbara region of Western Australia.

The full text of the announcement issued by West Coast Silver is provided below in Appendix A.

For further information, please visit the Company's website at www.alienmetals.uk or contact:

Alien Metals Limited

Bruce Garlick

Strand Hanson (Financial and Nominated Adviser)

James Harris / James Dance / Edward Foulkes

Zeus Capital Limited (Joint Broker)

Harry Ansell / Katy Mitchell Tel +44 (0) 203 829 5000

Turner Pope (Joint Broker)

Andy Thacker / Guy McDougall

Yellow Jersey (Financial PR)

Charles Goodwin / Shivantha Thambirajah

Appendix A - ASX: WCE ANNOUNCEMENT

Diamond Drilling Targeting High-Grade Silver Extensions Beneath Elizabeth Hill Mine

• Up to 1,500m diamond drilling program (6 holes) to commence beneath the historic Elizabeth Hill high-grade silver mine, Pilbara Western Australia.
• First systematic test of deeper silver mineralisation along the Munni Munni Fault - the primary structural control on high-grade silver at Elizabeth Hill.
• Targets extensions directly below and along strike of the underground mine, where 2025 drilling confirmed silver mineralisation extends to surface.
• Following up high grade silver intersections from historical surface and underground drilling.
• All holes designed to intersect the Munni Munni Fault within 200m of surface.
• Testing the "Pearls on a String" exploration concept- that high-grade silver mineralisation repeats at regular intervals along the fault, which could materially expand the scale of the Elizabeth Hill system.
• Drilling is expected to take approximately four to six weeks. Assay results are anticipated to be received progressively through Q2 2026.

West Coast Silver Limited (ASX: WCE) ('West Coast Silver' or the 'Company') is pleased to announce an up to 1,500m diamond drilling (DD) program is to commence in early April at its flagship Elizabeth Hill silver project in the Pilbara region of Western Australia. The drilling is designed to expand the existing footprint of the Elizabeth Hill high-grade silver mineralisation down-dip and plunge of the historical Elizabeth Hill silver mine (Figure 1, Figure 2).

This program represents the first systematic test of the Company's structural model targeting potential repetition of high-grade silver mineralisation at depth along the Munni Munni Fault, which, if confirmed, could materially expand the scale of the Elizabeth Hill system beyond the historical mine.

Drilling will test for extensions of mineralisation along strike of the historical Elizabeth Hill high-grade underground silver mine, and structural targets along the Munni Munni Fault. The Munni Munni Fault is a significant regional control on silver and base metal mineralisation.

The DD program will specifically probe between and around historical drilling results along the Munni Munni Fault. Previous drilling intersected moderate to high-grade silver mineralisation, justifying follow-up to confirm depth potential, continuity, grade and distribution of intercepted zones.

Drilling will also test the concept of high-grade mineralisation repeating at regular intervals with depth (Figure 3). This is the 'Pearls on a String' concept favouring structural repetition of mineralisation over strike and depth along the Munni Munni Fault.

All holes are targeting to intersect the Munni Munni Fault within approximately 200m of surface.

Initial DD will be to the south and down plunge of the historical Elizabeth Hill silver mine and then step-out to focus on areas south along the Munni Munni Fault. Drilling is expected to take approximately four to six weeks, subject to weather and operational conditions. Assay results are anticipated to be received progressively through Q2 2026.

Commenting on the results, Executive Chairman Bruce Garlick said:

"Our previous 2025 drilling confirmed that silver mineralisation at Elizabeth Hill extends beyond the historical underground mine and associated with a broader structural corridor along the Munni Munni Fault. This current program of diamond drilling below Elizabeth Hill is designed to determine whether there are high-grade silver extensions below and south of the mine. The drilling will also test whether high-grade mineralisation repeats at depth; a model that, if confirmed, could materially expand the resource potential."

Exploration Next Steps

West Coast Silver is running multiple exploration programs from end of March to end of May 2026, comprising reverse circulation drilling, diamond drilling, borehole and surface geophysics.

Focus through the next three months of exploration activities will be on processing, interpreting and reporting results, as well as dynamic repositioning of remaining planned drill holes to maximise chances of success from results received (geological, geophysical and assay results).

Figure 1: Plan view showing proposed diamond drill holes at Elizabeth Hill

Figure 2: Long Section showing planned diamond drilling (light blue) and current RC drill program (purple)

Figure 3: Conceptual diagram showing flexures and bends along the Munni Munni Fault. Mineralisation is localized at the intersection of flexures with the granite/ultramafic rock contact, with additional mineralised pods interpreted to depth. Silver mineralisation is represented by high grades (red zone), intermediate grades (yellow zone) and low grades (green zone). Model to be tested by 2026 drilling.

The Elizabeth Hill Project

• Mining operations ceased in 2000 as a result of low silver prices (US $5)[2].

Figure 4: Tenement Location.

Bruce Garlick

Executive Director

West Coast Silver Limited

[2] www.kitco.com/charts/silver