Taseko Mines Limited · TSX:TKO
Taseko Mines — Trekor Metals — Technical Presentation (October 2026)
54 slides from Taseko Mines's technical presentation, Oct 8, 2026
Slide 1: A Leading, Low-Cost North-American Copper Producer
A Leading, Low-Cost North-American Copper Producer Florence Site Tour October 8, 2026
Slide 2: Disclaimer
Disclaimer This presentation contains forward-looking statements and forward-looking information (collectively referred to as “forward-looking statements”) within the meaning of applicable Canadian securities legislation and the United States Private Securities Legislation Reform Act of 1995, Sectio
Slide 3: Presentation Overview
Presentation Overview Florence Copper Overview / Construction / Safety ISCR Wellfield Operations Plant Operations Successes / Challenges To-Date Opportunities Gibraltar / Yellowhead / Aley Update 4
Slide 4: Overview | Construction | Safety
| Overview | Construction | Safety 5
Slide 5: Florence Copper History
Florence Copper History 1969 1992-1996 2000 2011-2014 American Smelting & Acquired by Magma Copper BHP deferred mining operations Curis submits permit Refining Co. (ASARCO) Company. Magma evaluates due to low metal prices. Property applications; permitting undertakes early potential for ISCR Product
Slide 6: Florence Copper History
Florence Copper History Phase 1 Phase 2 PTF successfully operated wellfield and SX/EW plant, Construction & commercial operations producing more than 1 million lbs of copper cathode 2018 2019 2020 2023 2024 2026 • PTF development • First cathode • Completed PTF • Received final • Commence • Producti
Slide 7: First Greenfield ISCR Operation
Florence Copper – First Greenfield ISCR Operation The first new copper producer in the United States in more than a decade Project Highlights1 Mine Life 22-years 85 million pounds (~40k metric Annual production capacity tonnes) of copper cathode US$930 million @ US$3.75/lb After-tax NPV(8%) copper A
Slide 8: Florence Copper: a leading new source of 'Made in America' copper
Florence Copper – First Greenfield ISCR Operation Florence Copper: a leading new source of 'Made in America' copper metal Producing • 275 lb copper sheets ASTM Grade 1 • No downstream smelting Arizona Conventional Open-pit Mine vs. Florence Copper Project Copper Cathode or refining required (equival
Slide 9: Florence Copper – ISR
Florence Copper – ISR STEP Injection and recovery wells are drilled deep into the bedrock where the oxide 1 copper ore is situated Wells are concrete encased and STEP sealed above the oxide zone to protect 2 water quality STEP Lightly acidic solution (similar to household vinegar) is injected via th
Slide 10: Property Location
Florence Copper Property Location 11
Slide 11: Site Overview
Florence Copper Site Overview 12
Slide 12: Construction Cost Estimate
Florence Copper Construction Construction Cost Estimate March 2023 Technical Report Revised cost estimate in (costed in 2022): early 2024 (+ 15%): Final Spend (+3%): US$232 US$267 US$276 million million Million March 2024 Today 13
Slide 13: Health & Safety
Florence Health & Safety Construction YTD 2026 Operating Zero lost time injuries 1.1 million hours worked on construction project through Medical Aids 1 3 commissioning with zero lost time injuries Lost Time Injuries 0 0 MA/LTI Frequency 0.18 3.15 One medical aid Only one Medical aid during 20-month
Slide 14: Wellfield Operations
\. 3 ‘ x 7 0 Ay Wellfield Operations
Slide 15: Initial Wellfield
Florence Copper – Wellfield Operations Initial Wellfield 16
Slide 16: Wellfield Equipment
Florence Copper – Wellfield Operations Wellfield Equipment Pipe Skids Drill Rigs Well Head Pipeline Corridor Each group of between 8 6 rigs operating – using As of last week, ~145 Pipeline corridor to 14 wells is controlled both table drive & top wells in operation transports mining by a single pipe
Slide 17: Wellfield Operations PLS Grade
Florence Copper – Wellfield Operations Commenced wellfield PLS grades have averaged >1.5 acidification in November g/l (85% of LOM average) since 2025 with 74 production June, even at higher flow rates wells In August, 20 new wells brought PLS grade of 1.5 grams per online – new skid design liter (g
Slide 18: Copper Flow from Wellfield
Florence Copper – Copper Flow from Wellfield Copper in Solution Copper Flow from Wellfield Initial eight skids continue 100,000 Re-drilled test facility to deliver strong copper SX/EW plant comes online wells come online, production 90,000 (mid February) produces first quick to acidify cathode on Fe
Slide 19: Acid
Florence Copper – Acid Acid Consumption Acid consumption to the end of August was 53,725 tons (approximately 10:1) Higher than LOM average consumption per pound of copper due to initial acidification process, as modeled Consumption will increase in H2 2026 with new skids being brought online 2026 Pr
Slide 20: Wellfield Expansion
Florence Copper – Wellfield Expansion 21
Slide 21: Wellfield Expansion Skid Group 1-8
WELLFIELD EXPANSION SKID GROUP 1-8
Slide 22: Wellfield Expansion Skid Group 9-10
WELLFIELD EXPANSION SKID GROUP 9-10
Slide 23: Wellfield Expansion Skid Group 11-12
WELLFIELD EXPANSION SKID GROUP 11-12 9/24/2026
Slide 24: Wellfield Expansion Skid Group 15
WELLFIELD EXPANSION SKID GROUP 15 10/12/2026
Slide 25: Wellfield Expansion Skid Group 13
WELLFIELD EXPANSION SKID GROUP 13 12/1/2026
Slide 26: Wellfield Expansion Skid Group 16-17
WELLFIELD EXPANSION SKID GROUP 16-17 12/13/2026
Slide 27: Wellfield Drilling
Florence Copper – Wellfield Drilling Wellfield Expansion Drilling Average penetration rates have increased Total Wells Completed 2026 120 Targeted well completion time is 300-400 hours, depending on depth of well 90 Increased drilling productivities attributed to improved 60 performance by rig crews
Slide 28: 2026 Copper Production
2026 Copper Production Overall, wellfield expansion, solution flows, leaching and production are trending towards 2026 Copper Monthly Production (M lbs) targeted 7 million pounds per month 7.5 Production will be further boosted as Targeted Monthly Production acidification of skids 9, 10 and 11 is co
Slide 29: Plant Operations
Plant Operations 30
Slide 30: Plant Area
Florence Copper – Plant Operations Plant Area 31
Slide 31: ISR to Plant Process
Florence Copper – Plant Operations ISR to Plant Process 32
Slide 32: SX/EW
Florence Copper – Plant Operations SX/EW Currently harvesting cathode six days per week Current Density: Averaged ~175 amps/m2 in Q2, and 210 amps/m2 QTD for Q3 Strong metallurgical performance – SX recovery has averaged >95% since April Cathode quality has been excellent with very low impurities Op
Slide 33: Cathode Quality
Florence Copper – Plant Operations Cathode Quality Cathode has easily exceeded requirements for 12 measured analytes under ASTM Grade 1 (LME Grade A) ISCR wellfield recovery effectively reduces accumulation of contaminants which are routinely “bled” off by wellfield over-pumping 34
Slide 34: Operating and Sustaining Costs
Florence Copper - Operating and Sustaining Costs Operating Costs AISC (US$ millions) Costs per pound currently impacted by lower copper $20.0 production and high acid prices Royalty & Transportation $15.0 Expect linear decline in unit cost as production trends Sustaining towards 7 million pounds per
Slide 35: Successes / Challenges To-Date
Successes / Challenges To-Date 36
Slide 36: Overall Performance
Successes / Challenges To-Date Overall Performance Solid progress on ramp up to-date. Continuous month-over-month production improvements No significant wellfield performance issues. Flow rates and leaching better than previously modeled Work ongoing to optimize wellfield performance (balance betwee
Slide 37: Drilling
Successes / Challenges To-Date Drilling Drilling – Penetration Rate (ft/hr) 10 Slow to ramp up Additional rigs added 8 drilling after restart through first quarter in late 2025 2026 and now at six rigs 6 4 2 New crews resulted in Penetration rates lower productivities increasing now that 0 in H1 cre
Slide 38: Maintaining Solution Flow
Successes / Challenges To-Date Maintaining Solution Flow Over time, a moderate decrease of solution flows has been observed in both injection and recovery wells Two effective solutions: • Backflushing was halted in March due to Backflushing with raffinate – pump motor failures. After pump motors per
Slide 39: Well Pump Motors
Successes / Challenges To-Date Well Pump Motors Franklin Electric 30 hp Motors installed on nearly all initial commercial wells ~60% of these motors failed Almost no failure with pump ends, only motors Run life was from less than a month to ~7 months Innovative hose reel application adopted to speed
Slide 40: Cathode Quality
Successes / Challenges To-Date Cathode Quality Presents future opportunities for higher sales price because of high purity Opportunity to be sold as ”Green” copper due to environmentally favorable extraction method (ie, low carbon footprint) Positive customer feedback – have successfully completed t
Slide 41: Sulfuric Acid
Successes / Challenges To-Date Sulfuric Acid Acid Deliveries Majority of acid has been supplied out of Japan but multiple sources used this year Over 2,000 truck deliveries to site year-to-date with no incidents No issues with supply to-date Looking at opportunities to optimize logistics for moving
Slide 42: Recruitment / Retention
Successes / Challenges To-Date Recruitment / Retention Have been able to attract skilled workers despite a very competitive Arizona job market Current number of employees is 211, fully- staffed Positive response to all job postings In second quarter, received +1,000 applications and extended offers
Slide 43: Opportunities Ahead
Opportunities Ahead 44
Slide 44: Opportunities Ahead
Opportunities Ahead Wellfield Drilling Potential to bring drilling inhouse Ability to achieve greater than modeled 65% overall recovery Higher copper prices potentially allows wells to leach longer Cathode Registration can increase product value Comex / LME US copper tariffs would increase Comex pri
Slide 45: Beyond Florence
Beyond Florence 46
Slide 46: Gibraltar
Gibraltar Strong Third Quarter Production YTD copper production Strong grades and of 94 million pounds throughput have continued and 1.7 million pounds to drive solid production, molybdenum partially offset by lower recoveries in third quarter YTD Copper Production (M lbs) 36 27 18 Expect grades to
Slide 47: Capital Allocation
Capital Allocation Substantial improvement in leverage metrics expected with increasing EBITDA and Florence construction capex complete • Trekor maintains reasonable leverage levels and balances capital LTM Adjusted EBITDA needs through a combination of debt, equity and internally generated cash flo
Slide 48: Trekor – Operations and Projects
Trekor – Operations and Projects North American Asset Base Focused in North America 03 Yellowhead Project 01 Gibraltar Mine British Columbia | Arizona Thompson-Nicola, BC Cariboo-Chilcotin, BC ADVANCED STAGE PROJECT OPERATING Commodity: Copper (w/ Gold and Silver) LOM Avg. Annual Production: Commodi
Slide 49: Yellowhead Copper Project
Yellowhead Copper Project Project Economics1 Initial capital cost C$2.0 billion After-tax NPV8 C$2.0 billion @ US$4.25/lb copper LOM strip ratio 1.4:1 Onsite operating cost C$12.89 per tonne milled • First 5 years: 206M lbs copper Annual production • LOM average: 178M lbs copper • First Five Years:
Slide 50: Yellowhead Copper Project
Yellowhead Copper Project Recent Highlights Provincial / Federal EA Process: Detailed Project Description submitted to EAO June 30th Consent agreement signed by BC and Simpcw July 15th EA Readiness Decision issued July 30th Federal IA Determination July 30th Process Planning phase commenced August 4
Slide 51: Yellowhead Copper Project
Yellowhead Copper Project Estimated Development Timeline Yellowhead Is Here Application Final Investment Early Engagement Process Review Phase Decision and Planning Phase Planning Phase 2024 2025 2026 2027 2028 2029 2030 Pre-Early Readiness Decision Phase / Engagement Impact Assessment Determination
Slide 52: New Prosperity Gold-Copper Project
New Prosperity Gold-Copper Project Project Highlights • One of the largest undeveloped Copper-Gold porphyries in the world • Life of mine average annual production of +400,000 gold equivalent ounces over a 33 year mine life (based on 2009 Technical Report*) Recent Development • Agreement signed with
Slide 53: Aley Niobium Project
Aley Niobium Project Project Highlights1 P&P Reserves 84M tonnes grading 0.5% Nb2O5 Mine Life 24-years Annual production Capacity 14,00 tonnes of ferroniobium Project Update • Floatation Process Development - Development of a proprietary flotation process, resulting in higher niobium recoveries and
Slide 54: Thank You!
Thank You!
Trekor Metals — Technical Presentation (October 2026) on 6ix