Tertiary Minerals Plc · LSE:TYM
Tertiary Minerals — Shareholder Meeting (March 2026)
37 slides from Tertiary Minerals's shareholder meeting presentation, Mar 19, 2026
Slide 1: Company Presentation - Annual General Meeting 19 March 2026
www.tertiaryminerals.com info@tertiaryminerals.com AIM: TYM Drilling at Target A1, Mushima North Project, Zambia Company Presentation Annual General Meeting 19 March 2026
Slide 2: Disclaimer
OVERVIEW PROJECTS SUMMARY APPENDICES DISCLAIMER The content of information contained in these slides and the accompanying verbal presentation (together, the “Presentation”) has not been approved by an authorised person within the meaning of the Financial Services and Markets Act 2000 (“FSMA”). Relia
Slide 3: Key Investment Highlights
OVERVIEW PROJECTS SUMMARY APPENDICES KEY INVESTMENT HIGHLIGHTS Strategic Project Portfolio Projects are in stable, mining-friendly jurisdictions targeting precious metals/green energy transition metals: • Zambia: 5 projects (copper, silver) • US (Nevada): 4 projects (copper, gold, silver) • Sweden:
Slide 4: Key Operational Highlights
OVERVIEW PROJECTS SUMMARY APPENDICES KEY OPERATIONAL HIGHLIGHTS Clear Project advancement and value add strategy Mushima North Ag-Cu: Silver-copper exploration around recent silver discovery • 1,597m of drilling completed over 2 phases (further drilling stopped by rainy season). Best intersections o
Slide 5: Key Operational Highlights
OVERVIEW PROJECTS SUMMARY APPENDICES KEY OPERATOINAL HIGHLIGHTS Share price performance: • Increase of ~100% in 6 months. • Increase of ~80% in 12 months. • 2 Major shareholders on board (combined >10%). KoBold to advance (Konkola West) Further potential Phase 3 Drilling Results catalysts in Phase 2
Slide 6: Project Overview - Zambia
OVERVIEW PROJECTS SUMMARY APPENDICES PROJECT OVERVIEW - Zambia Cu, Ag, Zn, Co • 5 projects held directly or through local JV partnership. • Key locations in Zambia: Copperbelt, Domes Region, IOCG Region. • Targeting: Cu, Co, Au, Ag (Sedimentary copper & IOCG). • Drill ready or early drilling stage.
Slide 7: Mushima North Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH PROJECT ZAMBIAN IOCG REGION KEY FEATURES: • Right address: 20km east of Kalengwa Cu-Ag Mine (development). • Multiple drill targets identified: (A1, A2, B1-B3, C1) based on geochemistry & geophysics. • Polymetallic (Ag-Cu-Zn) Discovery at Target A1:
Slide 8: Mushima North Project Update
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH PROJECT UPDATE Tertiary Minerals plc AIM: TYM www.tertiaryminerals.com info@tertiaryminerals.com 8
Slide 9: Konkola West Project
OVERVIEW PROJECTS SUMMARY APPENDICES KONKOLA WEST PROJECT ZAMBIAN COPPERBELT KEY FEATURES: • World-class location: Situated in the prolific mining area; Konkola- Lubambe-Musoshi deposits: >775 Mt @ 2-3% Cu pre-mining endowment. • Right address: 3km SW of KCM’s Konkola Deeps Mine & 5km SW of KoBold’s
Slide 10: Mukai Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUKAI PROJECT ZAMBIAN DOMES REGION KEY FEATURES: • Located in prolific domes region: • 17km N of Sentinel Copper Mine (762 Mt @ 0.45% Cu). • 7km N of Enterprise Nickel Mine (35.1 Mt @ 0.41% Ni). • Right address: Along basin from FQM Tirosa project, e.g. drilling
Slide 11: Jacks Project
OVERVIEW PROJECTS SUMMARY APPENDICES JACKS PROJECT ZAMBIAN COPPER BELT KEY FEATURES: • Right geology: Targeting Lower & Upper Roan in underexplored region. • Favourable structural feature. • Historic drilling identified near surface oxide and deeper sulphide copper mineralisation. • Intersections in
Slide 12: Mupala Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUPALA PROJECT ZAMBIAN COPPERBELT KEY FEATURES: • Located in prolific domes region (adjacent to ARC Minerals plc). FQM active through several JVs. • Right geology: Targeting Lower & Upper Roan along dome margin • Cu-in-soil anomaly 1.8 km by 0.6 km (up to 422 ppm
Slide 13: Project Overview - USA Nevada
OVERVIEW PROJECTS SUMMARY APPENDICES PROJECT OVERVIEW - USA NEVADA (Cu, Au, Ag) • 4 projects held directly. • Targeting: Cu, Au, Ag (epithermal, skarn & porphyry). 2 projects within Walker Lane belt. • Drill ready or early drilling stage. • Prolific mining jurisdiction: World-class gold district wit
Slide 14: Project Overview - Sweden
OVERVIEW PROJECTS SUMMARY APPENDICES PROJECT OVERVIEW - Sweden SWEDEN (F) • 1 project: Storuman Fluorspar Project. • Advanced stage: MRE & Scoping Study completed. • Positive EU legislation: Improved mining perception, Sweden more pragmatic (several licences with positive appeals in last 12 months).
Slide 15: Next Steps: Multiple Upside Milestones
OVERVIEW PROJECTS SUMMARY APPENDICES NEXT STEPS MULTIPLE UPSIDE MILESTONES Zambia • Mushima North: JORC-compliant Exploration Target Further Drilling Working towards Maiden MRE. • Kobold: Formation of Joint Venture Company Progression to Stage 2 Earn-in Further Drilling. • FQM: 2nd year of Due Dilig
Slide 16: Key Takeaways: Why Invest?
OVERVIEW PROJECTS SUMMARY APPENDICES KEY TAKEAWAYS WHY INVEST? STRONG PROJECT PORTFOLIO: Attractive portfolio of projects covering key commodities in the right jurisdictions. CLEAR VALUE CREATION PATHWAY: Multiple potential catalysts across project portfolio (several near-term catalysts). EXPERIENCE
Slide 17: Tertiary Minerals plc contact details
Tertiary Minerals plc Queens Avenue Macclesfield Cheshire SK10 2BB United Kingdom Tel: +44 (0)1625 838 679 info@tertiaryminerals.com www.tertiaryminerals.com Drilling on the Konkola West Project, Zambia Additional information in Appendices below
Slide 18: Board of Directors
OVERVIEW PROJECTS SUMMARY APPENDICES BOARD OF DIRECTORS PATRICK CHEETHAM DR RICHARD BELCHER DONALD McALISTER DR MIKE ARMITAGE ROD VENABLES Non-Executive Chairman Managing Director Non-Executive Director Non-Executive Director Company Secretary • Geologist and founder of the • Geologist with over 22
Slide 19: Mushima North Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH PROJECT ZAMBIAN IOCG REGION COMMODITY: Copper, Zinc, Silver OWNERSHIP: 90% LICENCE : 27068-HQ-LEL, ~350km2 STAGE: Limited (shallow) drilling completed (~2,871m in total) Currently working towards a JORC Exploration Target. GEOLOGY: Metasediments (sa
Slide 20: Mushima North Summary
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH SUMMARY ACTIVITY DETAILS Geological Mapping Historic reconnaissance mapping. Regional survey interpretation (RCM, 1970s). Detailed mapping Mukundushi area (African Minerals Ltd, 1990s) Geochemistry Musondweji soil geochemical survey (Cu, Pb, Zn, Co,
Slide 21: Mushima North Target A1
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH TARGET A1 Footnotes • Calculated intersections (down hole, true width unknown) are weighted averages based on silver, using a cut-off grade of 10 g/t Ag with up to 3m internal dilution. • Silver values rounded to whole numbers. • “gramme metres” is
Slide 22: Mushima North Target C1: Drilling
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH TARGET C1: DRILLING • RKN800 on margin of the gravity anomaly recently resampled: • 33m grading 0.24% copper from 122m-155m downhole. • Hole ended in mineralisation grading 0.19% copper from 154-155m (EOH). • 7 AC holes targeting the Cu-in-soil anom
Slide 23: Jacks Project
OVERVIEW PROJECTS SUMMARY APPENDICES JACKS PROJECT ZAMBIAN COPPER BELT COMMODITY: Copper OWNERSHIP: 90% LICENCE SIZE: 27069-HQ-LEL, 70.6km2 STAGE: Initial drilling GEOLOGY: Lower and Upper Roan within large synformal structure. Possible fault bounded along southern margin. KEY FEATURES: • Shallow, n
Slide 24: Jacks Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES JACKS PROJECT SUMMARY Note: Programmes in bold italics undertaken by Tertiary or their JV partners. WORK PROGRAMMES DETAILS Geological Mapping Historic Regional Mapping Geochemistry Regional soil geochemistry, 500 by 500m off-set grid, ME analysis (First Quantum
Slide 25: Jacks Project Historic Data
OVERVIEW PROJECTS SUMMARY APPENDICES JACKS PROJECT HISTORIC DATA BHID From (m) To (m) Interval (m) Cu % Interval Hole ID Cu (%) From (m) To (m) KJ07 322 329 7 1.54 (m) KJ11 65 70 5 0.65 22JKDD01 0.9 13.5 77.5 91.0 KJ12 67 76 9 0.90 Including 1.7 3.0 79.5 82.5 KJ13 18 31 13 0.72 Including 1.2 3.5 87.
Slide 26: Mukai Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUKAI PROJECT ZAMBIAN COPPERBELT COMMODITY: Copper OWNERSHIP: 90% LICENCE SIZE: 27066-HQ-LEL, 27.7km2 STAGE: Initial drilling (on-going) GEOLOGY: Northwestern end of the Tirosa basin, targeting Lower Roan near surface. KEY FEATURES: • JV with FQM. • Right geology
Slide 27: Mukai Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES MUKAI PROJECT SUMMARY • Mukai Project is located centrally between: • FQM’s Trident Project (Sentinel Copper Mine & Enterprise Nickel Mine). • Arc Minerals (recently has a JV with Anglo American, where Anglo American has the right to earn 70% for US$88.5M. • Cont
Slide 28: Mukai Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES MUKAI PROJECT SUMMARY WORK PROGRAMMES DETAILS Geological Mapping Regional Historic Map. Local interpreted map for Trident project area & Tirosa basin Geochemistry Regional soil sampling (FQM) around project area Regional sampling undertaken by Sunmine (limited in
Slide 29: Konkola West Project
OVERVIEW PROJECTS SUMMARY APPENDICES KONKOLA WEST PROJECT ZAMBIAN COPPERBELT COMMODITY: Copper OWNERSHIP: 96% LICENCE SIZE: 27067-HQ-LEL, 35.7km2 STAGE: Drilling (on-going) GEOLOGY: Potentially part of the Konkola mineralised complex & southern part of the Kirla Bombwe anticline. KEY FEATURES: • JV
Slide 30: Konkola West Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES KONKOLA WEST PROJECT SUMMARY WORK PROGRAMMES DETAILS Geological Mapping Regional Geological Map; 1:250,000 interpretative maps (SRK Consulting). Interpretative academic research Geochemistry None Geophysics Historic regional airborne surveys Seismic lines over Lu
Slide 31: Konkola West Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES KONKOLA WEST PROJECT SUMMARY Konkola-Lubambe-Musoshi ore deposits Mingomba Deposit: “Expected to be one of the top Pre-mining endowment: >775million tons @ three high grade copper deposits in the world” 2-3% copper KoBold Metals Vedanta has committed US$1 billion
Slide 32: Mupala Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUPALA PROJECT ZAMBIAN COPPERBELT COMMODITY: Copper OWNERSHIP: 100% LICENCE SIZE: 32139-HQ-LEL, 41km2 STAGE: Early-stage exploration GEOLOGY: Lower & Upper Roan on margin of large domal structure. Cross-cutting NW-SE faults. KEY FEATURES: • Right geology: Targeti
Slide 33: Mupala Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUPALA PROJECT WORK PROGRAMMES DETAILS Geological Mapping Regional Historic Map Geochemistry Historic hand auger (RST) 684 samples, 300 by 300m off-set grid covering entire licence Geophysics Regional MAG data (FQM) Drilling None • Licence wide soils on a 300 by
Slide 34: Brunton Pass Project
OVERVIEW PROJECTS SUMMARY APPENDICES BRUNTON PASS PROJECT COPPER, NEVADA COMMODITY: Copper OWNERSHIP: 100% LICENCE SIZE: 2.0km2 STAGE: Initial scout drilling completed GEOLOGY: Triassic-aged carbonate & clastic sediments overlying/intruded by granitoid & exposed within a ‘window’ through the overlyi
Slide 35: Brunton Pass Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES BRUNTON PASS PROJECT SUMMARY WORK DETAILS PROGRAMMES Geological Mapping Regional maps and interpretation Geochemistry 47 rock chip samples (2020-2022) 485 soil samples (100m off-set grid, with 50m by 100m infill) Geophysics IP survey (4 profiles 100m spaced, for
Slide 36: Storuman Project
OVERVIEW PROJECTS SUMMARY APPENDICES STORUMAN PROJECT FLUORSPAR, SWEDEN COMMODITY: Fluorspar OWNERSHIP: 100% LICENCE SIZE: 1.8km2 STAGE: Scoping Study. Mining Permit currently under review JORC MRE: 25.0 Mt @ 10.26% CaF2. 2.7 Mt @ 9.87% CaF2. • Good infrastructure: Good road network, rail line <25km
Slide 37: Storuman Project
OVERVIEW PROJECTS SUMMARY APPENDICES STORUMAN PROJECT FLUORSPAR, SWEDEN • Large fluorspar resource defined by Tertiary in 2011. • Original application for mining concession granted then overturned. • Initial appeal rejected and further appeal being submitted against Swedish Mining Inspector’s decisi