Great Western Mining Corp. Plc · LSE:GWMO
Great Western Mining — Investor Presentation (September 2025)
19 slides from Great Western Mining's investor presentation, Sep 11, 2025
Slide 1: Developing a diverse portfolio of strategic minerals in a world-class mining jurisdiction
AIM: GWMO / EURONEXT GROWTH: 8GW Developing a diverse portfolio of strategic minerals in a world-class mining jurisdiction Q3 2025
Slide 2: Disclaimer
Disclaimer Certain information contained herein constitutes Forward-looking statements are not guarantees forward-looking statements which can be of future performance and the actual results of identified by the use of forward-looking the Company's operations, financial position and terminology such
Slide 3: Snapshot
Snapshot Base • Advancing a significant copper project with an initial resource already defined Diverse portfolio at multiple stages • Drill-ready porphyry system offers strong in a prime mining region potential for further expansion Precious • Actively exploring for commercial-scale gold and silver
Slide 4: Strategy
Strategy Strategic Minerals. Scalable Projects. Smart Partnerships. 1. 2. 3. 4. Advance Flagship Unlock Value Through Partnerships Fast-Track Critical Minerals Monetise Precious Metals Minerals Copper Asset • Grow existing JORC • Prioritise tungsten exploration • Leverage JV & farm-out • Advance exp
Slide 5: Markets Overview
Markets Commodity Highlights Industrial metal critical to clean Strategic Value for GWM Overview energy, electronics and defence; USD Strategic demand rising on supply Copper concerns. 330 b market Precious metal haven with long-term Adds stability & capital optionality Exposure across industrial Go
Slide 6: Location: Nevada
Location: Nevada • #2 globally for mining Mineral County • Large, underexplored district World-class Geology with proven investment attractiveness in the Walker Lane Belt with (Fraser Institute, 2024) proven mineralisation potential • 170+ years of gold & silver • Hosts high-grade epithermal Eight 1
Slide 7: Huntoon Copper Project
Huntoon Copper Single drillhole to date M2 Resource Skarn deposit 4.28 Mt @ Project intercepted 45.7 m @ 0.45% Cu 0.27% Cu from 35.1 m Open with undrilled West in hole targets in both directions Huntoo 3km2 of anomalous Cu. along strike. n Undrilled overlapping IP and magnetic A growing multi-metal
Slide 8: West Huntoon
West Huntoon Centred on the Crowne Pointe granite, a previously unrecognised outcrop with porphyry copper potential • 3 km² zone sampled around granite outcrop, close to historic Huntoon Gold Mine & multiple mineralised targets • Sampling confirms high-grade Ag (2,438 g/t), Au (7.3 g/t) & widespread
Slide 9: Olympic Gold Project
Olympic Gold Project High-grade gold potential at the crossroads of two of Nevada’s major trends • 825-acre claim group hosting near-surface, low-sulphidation epithermal quartz-gold vein mineralisation • Sits at the intersection of two major gold trends: N–S (Rawhide–Tonopah) and E–W (Aurora–Round M
Slide 10: Key Gold Target Zones
Key Gold Target Zones OMCO Extension East OMCO Fault OMCO Tailings Trafalgar Hill South/west extensions of Potential southeast offset of ~41 kt historic tailings JORC Covered gold-quartz veins with OMCO vein; possible parallels OMCO vein resource @ 1.67 g/t Au; strike and depth upside like Cosmos re
Slide 11: Olympic: Rhyolite Dome
Olympic: Rhyolite Dome Unexplored epithermal system with multiple stacked indicators • Anomalous gold in soils (up to 207 ppb) • Pathfinder elements: As, Ag, Hg • Favourable geology: lava dome, chalcedonic veins, sinters • Major NW–NE structural intersections • Proximity to placer gold and known dep
Slide 12: Tungsten: Strategic Upside
Tungsten: Strategic Upside Aligns with US domestic critical minerals priorities • New claims staked over a 1.2 km corridor link Pine Crow and Defender tungsten workings - potential single linked mineralised system • Grab samples returned up to 1.75% - over five times previous highs • UV fluorescence
Slide 13: Western Milling LLP
Western Milling LLP 50:50 JV process mill with local partner • Established to recover precious metals from historic mine waste at Olympic Gold Project and Mineral Jackpot claims • Olympic Gold tailings have a JORC compliant Inferred Resource of 31,000 t @ 1.6 g/t Au & 3.0 g/t Ag as well as a signifi
Slide 14: Other Claims & Projects
Other Claims Eastside Mine: Strong porphyry potential ~18 km southeast of Huntoon Copper Project. Claims pooled with neighbour Bronco Creek Exploration. & Projects Mineral Jackpot: Low-cost optionality across High-grade soils, historical spoil-heap reprocessing, drilled 536 m in 2022; best intercept
Slide 15: Strong Team & Governance
Strong Team & Governance In-country, technical, and corporate leadership well-aligned with GWM’s value creation path Brian Hall Robert O’Connell Max Williams Executive Chairman Operations Director Finance Director & Company Secretary An experienced board TCU graduate turned driller director who foun
Slide 16: Strong Team & Governance
Strong Team & Governance In-country, technical, and corporate leadership well-aligned with GWM’s value creation path Andrew Hay Alastair Ford Gemma Cryan Dr. Lawrence Carter Non Executive Director Non Executive Director Non Executive Director Consultant Oxford graduate with 30 Oxford educated mining
Slide 17: Upcoming Catalysts
Upcoming Catalysts Near-term milestones driving multi-metal upside 1. Copper drill results from West Huntoon 2. Maiden gold drilling at Olympic, Rock House 3. Tungsten exploration work updates 4. Upscale process mill for first revenues through third-party financing
Slide 18: Investment Case
Multi-metal portfolio reduces Funding in place to advance key Investment risk and enhances upside catalysts and unlock value A strategic mix of base, precious Copper and gold drilling as well as and critical minerals provides first phase tungsten exploration Case natural hedging and exposure to are
Slide 19: Contacts
Contacts www.greatwesternmining.com brian.hall@greatwesternmining.com max.williams@greatwesternmining.com greatwesternmining@stbridespartners.co.uk @mining_great www.linkedin.com/company/great-western-mining/
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