Anglesey Mining Plc · LSE:AYM
Anglesey Mining — Investor Presentation (September 2026)
33 slides from Anglesey Mining's investor presentation, September 2026
Slide 1: Developing a Strategic UK Critical Minerals Project
DEVELOPING A STRATEGIC UK CRITICAL MINERALS PROJECT September 2026 New leadership for an advanced project with a clear development strategy angleseymining.co.uk AIM: AYM
Slide 2: Disclaimer
2 angleseymining.co.uk DISCLAIMER This document, including the accompanying narrative (if applicable), (this "Presentation") does not constitute an offer or invitation or a solicitation of any offer or invitation for the sale or purchase of any securities in the capital of Anglesey Mining plc (the "
Slide 3: Contents
3 angleseymining.co.uk CONTENTS 01 02 03 04 Leadership The Asset & Resources & Mining, & Company Development Exploration Metallurgy & Progress Pathway Upside Economics 05 06 07 Development Investment Appendix Strategy Summary & Contact
Slide 4: Building the Team and Momentum to Advance Parys Mountain
4 angleseymining.co.uk BUILDING THE TEAM AND MOMENTUM TO ADVANCE PARYS MOUNTAIN LEADERSHIP & COMPANY PROGRESS
Slide 5: Why AYM
5 angleseymining.co.uk INVESTMENT PROFILE WHY AYM 100% Owned, Retained Asset: A Refreshed Company: Our Strategy: Three pathways to creating value UK's Largest polymetallic resource, Circa £4 million of debt eliminated in situated in North Wales. 2026. 1 Develop the Mine Advance engineering, mine pla
Slide 6: Experienced Leadership Advancing Parys Mountain
6 angleseymining.co.uk BOARD OF DIRECTORS EXPERIENCED LEADERSHIP ADVANCING PARYS MOUNTAIN A proven team combining deep mining expertise, operational excellence, capital markets capability and corporate leadership to advance Anglesey Mining's vision. JIM WILLIAMS ANDREW FULTON BRENDAN CAHILL Executiv
Slide 7: Establishing the Foundations for Growth
7 angleseymining.co.uk PARYS MOUNTAIN ESTABLISHING THE FOUNDATIONS FOR GROWTH Recent progress has strengthened Anglesey Mining and established the corporate, financial and leadership foundations to advance the 100%-owned Parys Mountain project. £4 million debt £680,000 fundraise & Martin Wood and Ta
Slide 8: An Advanced, Permitted Pathway to Production at Parys Mountain
8 angleseymining.co.uk AN ADVANCED, PERMITTED PATHWAY TO PRODUCTION AT PARYS MOUNTAIN THE ASSET & DEVELOPMENT PATHWAY
Slide 9: An Advanced Mine Development Project
9 angleseymining.co.uk AN ADVANCED MINE DEVELOPMENT PROJECT Independent technical studies, existing infrastructure and historical mine development provide a strong foundation for future mine development. Independent technical studies Existing infrastructure The 2021 Preliminary Economic Freehold own
Slide 10: Structured Programme for Responsible Mine Development
10 angleseymining.co.uk PLANNING AND PERMITTING STRATEGY STRUCTURED PROGRAMME FOR RESPONSIBLE MINE DEVELOPMENT Existing planning permission for underground activities and extensive site information provide a strong foundation for the current modern permitting review and consent programme. Mid 1988 M
Slide 11: Potential for Parys Mountain to Grow
11 angleseymining.co.uk PARYS MOUNTAIN POTENTIAL FOR PARYS MOUNTAIN TO GROW Independent technical studies, existing infrastructure and historical mine development provide a strong foundation for future mine development. Why we believe Parys Mountain is undervalued Parys Minto South Crofty 100% owner
Slide 12: A Mine Plan within a Larger Mineral System
12 angleseymining.co.uk A MINE PLAN WITHIN A LARGER MINERAL SYSTEM Develop the deposit, grow the system & discover the district STOPING PLAN IN RED & Mine development DECLINE IN BLUE FROM 2021 PEA The current mine development plan focuses on BASE CASE the Engine Zone, White Rock deposit and then SCE
Slide 13: A Large, Growing Resource with District-Scale Exploration Upside
13 angleseymining.co.uk A LARGE, GROWING RESOURCE WITH DISTRICT-SCALE EXPLORATION UPSIDE RESOURCES & EXPLORATION UPSIDE
Slide 14: Parys Mountain – Resources
14 angleseymining.co.uk PARYS MOUNTAIN – RESOURCES White Rock and Engine Zone using the March 2023 Micon Resource Update / MRE, and Northern Copper Zone, Garth Daniel and Deep Engine retained from the January 2021 PEA & MRE. Engine Zone¹ — Measured Northern Copper Zone² — Inferred Total Measured NCZ
Slide 15: 2023 Drill Results Confirm Geological System and Highlight Further Resource Upside
15 angleseymining.co.uk 2023 DRILL RESULTS CONFIRM GEOLOGICAL SYSTEM AND HIGHLIGHT FURTHER RESOURCE UPSIDE NCZ001 intersections include: Garth Daniel intersection includes: ● NCZ002 intersected a broad – 63.0m @ 0.7% CuEq (NCZ): and, – 4.0m @ 4.9% CuEq (5.2% Cu, zone of sulphides from 426m This rece
Slide 16: System Mineralisation Identified Along 1,600m of Strike
16 angleseymining.co.uk OPTIONS TO EXTEND THE RESOURCE SYSTEM SYSTEM MINERALISATION IDENTIFIED ALONG 1,600M OF STRIKE A White Rock Extension B Engine Zone Extension 200 m C Linking Deep Engine Zone and Garth Daniel 400 m D Northern Copper Zone E Orient Shaft Zone 600 m Legend 1000 m 1200 m 1400 m 16
Slide 17: Multiple Target Horizons within the Mineralised System
17 angleseymining.co.uk OPTIONS TO EXTEND THE RESOURCE SYSTEM MULTIPLE TARGET HORIZONS WITHIN THE MINERALISED SYSTEM 4600E 4800E Garth Daniel Zone Central Zone Northern Copper Zone High-grade polymetallic massive High-grade polymetallic massive sulphides Cu dominant stockwork, veinlets hosting sulph
Slide 18: Turning Parys Mountain's Resource into a Robust, De-risked Investment Case
18 angleseymining.co.uk TURNING PARYS MOUNTAIN'S RESOURCE INTO A ROBUST, DE-RISKED INVESTMENT CASE MINING, METALLURGY & ECONOMICS
Slide 19: Pre-concentration and Conventional Flotation to Produce Metal Concentrate
19 angleseymining.co.uk METALLURGY PRE-CONCENTRATION AND CONVENTIONAL FLOTATION TO PRODUCE METAL CONCENTRATE 2024 testwork confirms Parys Mountain ores can be upgraded 52% by DMS and 55% via XRT prior to flotation Metal Zinc Lead Mass Rejection Loss Recoveries for Pb and Zn similar to historical (%) (
Slide 20: Parys Mountain Generates Value from a Diversified Suite of Payable Metals
20 angleseymining.co.uk METAL PROFILE PARYS MOUNTAIN GENERATES VALUE FROM A DIVERSIFIED SUITE OF PAYABLE METALS At 3,000tpd, an average output of c.15ktpa CuEq, peaking at c.20kt CuEq NSR BY METAL (2021 PEA Pricing) Annual Output in copper equivalents Copper/Zinc dominant revenue stream 16000 Potent
Slide 21: Copper & Zinc: Growing Critical Minerals
21 angleseymining.co.uk COPPER & ZINC: GROWING CRITICAL MINERALS Copper and Zinc prices: 2021 to today Annual average prices in US$/metric tonne; 2026 uses latest cash/spot price as of 30 June 2026. Copper +43.2% Zinc +18.7% Long-term demand for copper and zinc is Copper trend line expected to be su
Slide 22: Assessing the Impact of Current Market Conditions on the 2021 PEA
22 angleseymining.co.uk 2026 INTERNAL ECONOMIC RE-EVALUATION ASSESSING THE IMPACT OF CURRENT MARKET CONDITIONS ON THE 2021 PEA Case A based on 1,500t/day Initial Underground Development Case C based on 3,000t/day Wider Underground Development and mining of White Rock and Engine Zone AYM Forecast as
Slide 23: Advancing Development, Unlocking Growth
23 angleseymining.co.uk ADVANCING DEVELOPMENT, UNLOCKING GROWTH DEVELOPMENT STRATEGY
Slide 24: Technical Development Strategy
24 angleseymining.co.uk TECHNICAL DEVELOPMENT STRATEGY A systematic programme to advance mine development, grow the resource and unlock district-scale exploration potential. Advancing the Increase the knowledge, Identify new exploration development of the confidence and value of the targets within t
Slide 25: A Compelling, De-risked Investment Case Ready to Advance
25 angleseymining.co.uk A COMPELLING, DE-RISKED INVESTMENT CASE READY TO ADVANCE INVESTMENT SUMMARY & CONTACT
Slide 26: Investment Summary
26 angleseymining.co.uk INVESTMENT SUMMARY Strategic 100% Owned Proven Polymetallic Resources Established Brownfield Asset UK Asset at Parys Mountain with Significant Measured and Indicated Resources Growing emphasis on supply chain Sole focus on the flagship project, security and domestic mineral with
Slide 27: Contact Information
CONTACT INFORMATION mail@angleseymining.co.uk angleseymining.co.uk
Slide 28: Supporting Technical Detail and Historical Context
28 angleseymining.co.uk SUPPORTING TECHNICAL DETAIL AND HISTORICAL CONTEXT APPENDIX
Slide 29: Northern Copper Zone History
29 angleseymining.co.uk NORTHERN COPPER ZONE HISTORY M-series holes discovered the mineralised zone in 1962 Internal resource estimate of 17Mt @ 0.71% Cu in 1968, with 'potential' scale implied at 60 – 200Mt 1962 1968 – 1972 1973 – 1975 1981 – 1985 2004 – 2008 2012 ● After drilling of H-series holes
Slide 30: Underexplored VMS System
30 angleseymining.co.uk UNDEREXPLORED VMS SYSTEM Sporadic exploration followed by infill drilling of white rock and engine zone ● Northern Copper Zone first identified in 1961 drilling ● White Rock and Engine Zone discovered 1980 – 1981 ● Since 1961, a total of 369 diamond drill holes completed across
Slide 31: Historical Drill Intersections
31 angleseymining.co.uk HISTORICAL DRILL INTERSECTIONS Northern Copper Zone and southern contact (Garth Daniel) unfinished business These zones needs further drilling to confirm grades and continuity (all Inferred resource category) Selection of High Grade Intersections Hole ID Depth (m) Width (m) Gr
Slide 32: Respecting the Heritage
32 angleseymining.co.uk RESPECTING THE HERITAGE Remaining resources are underground and located outside of the historic mining site ● All future mining will be underground ● There are no plans to do any surface or open pit mining ● Preservation of existing heritage areas, Sites of Special Scientific
Slide 33: Further High-Grade Extension
33 angleseymining.co.uk FURTHER HIGH-GRADE EXTENSION 1962 1968 – 1972 1973 – 1975 1981 – 1985 2004 – 2008 2012 1.0km ● Exploration target along southern contact – potential outline of 800m (s) x 500m (d) x 3.5m (w) x 2.9 (SG) ● Lower Engine Zone and Garth Daniel combined resource currently 1.0Mt at
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