Denison Mines Corp. · TSX:DML

Denison Mines — GLOBAL 2022 Conference

13 slides from Denison Mines's conference presentation, Jul 7, 2022

  1. Slide 1: A new standard of sustainable uranium mining rises from the depths of the uranium down-turn

    A new standard of sustainable uranium mining rises from the depths of the uranium down-turn GLOBAL 2022 Conference – July 7, 2022 Uranium Development & Exploration The Athabasca Basin, Northern Saskatchewan

  2. Slide 2: Cautionary Statements & References

    Cautionary Statements & References This presentation and the information contained herein is designed to help you understand management’s current views, and may not be appropriate for other purposes. This presentation contains information relating to the uranium market, third party and provincial in

  3. Slide 3: Summarized History of the Wheeler River Project

    US$135/lb U3O8 Summarized History of the Wheeler River Project(1)(2): Approaching two decades of investment and management by Denison Long Term Price (2) US$50/lb U3O8 US$18/lb U3O8 PHOTOS (Left to Right): Drill rig carrying out Spot Price(2) exploration at the Wheeler River site in the mid 2000s; C

  4. Slide 4: Wheeler River PFS: Robust economics supported by conservative uranium price assumptions

    Wheeler River PFS: Robust economics supported by conservative uranium price assumptions NOTES: (1) Refer to the Wheeler River Technical Report 3000 PFS Pre-Tax NPV8% (100% Basis) Phoenix Gryphon titled “Pre-feasibility Study Report for the Wheeler River Uranium Project, ~US$29/ lb U3O8 US$50/ lb U3O

  5. Slide 5: Freeze wall design with phased freeze holes

    Phase 1 : 57 Freeze holes Phase 2 : 41 Freeze holes Phase 3 : 54 Freeze holes Phase 4 : 52 Freeze holes APSE * Phase 5 : 118 Freeze holes Ms pHASE 5 5m spaced VERTICAL FREEZE HOLES drilled from surface in phases over the life of mine, creating contained mining area surrounded by 10 m thick Freeze Wa

  6. Slide 6: Advantages of ISR uranium mining in Canada

    Advantages of ISR uranium mining in Canada: Potential to set superior standards for environmental protection, occupational health and safety, and sustainability ✓ Small surface footprint ✓ No tailings production ✓ Enhanced site reclamation ✓ Lower water consumption ✓ Lower energy consumption ✓ Lower

  7. Slide 7: Phoenix ISR De-Risking: First principles of successful ISR mining in the Athabasca Basin

    Phoenix ISR De-Risking: First principles of successful ISR mining in the Athabasca Basin 1. Containment: ability to 4 contain the mining solution injected into the formation 2. Permeability: ability to establish hydraulic connections between injection and recovery wells to move the mining solution t

  8. Slide 8: 2019 and 2020 ISR field test programs

    Phoenix ISR De-Risking: 2019 and 2020 ISR field test programs(1)(3) ~35 Two ~40 small- large- Pump and diameter diameter injection wells commercial- tests scale wells installed into completed to and around the First installed in collect extensive PHOTOS: Phoenix deposit the history of data for ISR f

  9. Slide 9: 2021 commercial-scale test pattern and tracer test

    Phoenix ISR De-Risking: 2021 commercial-scale test pattern and tracer test(1) 5-spot Tracer Permeability Enhancement large- Test Tools Tested diameter On a larger-scale First known commercial than previous completed ion tests, verifying scale test tracer test for increased ISR mining in pattern the

  10. Slide 10: Core Leach Testing

    Phoenix ISR De-Risking: Validating in-situ leachability through specialized metallurgical testing Core 50% Plant design Leach increase in ISR mining advancing Testing head Metallurgical testing using grade(1) roughly 1000L of Saskatchewan Core leach test uranium bearing Research results support solu

  11. Slide 11: Planned 2022 field feasibility test ('FFT')

    Phoenix ISR De-Risking: Planned 2022 field feasibility test (‘FFT’) ▪ FFT is planned for the second half of 2022 – more details to come ▪ Expected to represent final confirmation of the technical feasibility of the ISR mining method at Phoenix ▪ Designed to make use of the existing commercial scale

  12. Slide 12: Feasibility Study

    Phoenix ISR Feasibility Study: Wood PLC selected to lead + author independent Feasibility Study in accordance with NI 43-101(1) 50% Updated increase Estimate of Mineral to ISR mining Resources uranium head- grade in PFS(3) including results from GWR-045(4) Process Mine PHOTO: Plant Design Isometric

  13. Slide 13: Multiple Denison projects under evaluation for potential amenability of ISR mining

    Multiple Denison projects under evaluation for potential amenability of ISR mining (1)(2) Waterbury Lake (Denison 66.9% / 33.1% KWULP/KHNP) ISR Evaluations: Orano 2020 THT Prelim. Economic Assessment McClean Lake Mill (Denison 22.5% / Orano 77.5%) Midwest (Denison 25.17% / Orano 74.83%) ISR Evaluati

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