Denison Mines Update | David Cates and Geoff Smith

Key Concepts

• ISR (In-Situ Recovery): A mining method that recovers minerals by dissolving them in place and pumping the solution to the surface, avoiding traditional open-pit or underground excavation.
• Phoenix ISR Mine: Denison’s flagship uranium project in the Athabasca Basin, Canada.
• Perimeter Freeze Fence: A technical infrastructure used in ISR mining to isolate the ore body and prevent groundwater contamination or fluid migration.
• Capex (Capital Expenditure): The funds used by a company to acquire, upgrade, and maintain physical assets.
• MLAN North (Saber Mine): A joint venture project with Orano, currently in production.
• Athabasca Basin: A region in Canada known for high-grade uranium deposits.
• Team Denison: A strategic investment portfolio of equity positions in junior exploration companies.

1. Phoenix ISR Mine: Construction and Development

• Status: Denison has received final permits and is commencing site preparation and construction in March 2026.
• Timeline: A two-year construction phase is planned, targeting first production by mid-2028.
• 2026 Priorities:
  1. Civil/Earthworks: Preparing the site for slab pouring to facilitate process plant construction.
  2. Wellfield Infrastructure: Installing the perimeter freeze fence, which requires 12–14 months to establish.
• Operational Specs: The mine has an estimated 10-year life, with an average annual production of 6 million lbs. Production is front-loaded, targeting 8–9 million lbs/year in the first five years.
• Capex Update: Post-FID (Final Investment Decision) capex is estimated at $600 million. The increase from the 2023 feasibility study is attributed to inflation and a design upgrade to "large diameter wells" for both injection and recovery, providing greater operational flexibility.

2. Commercial Strategy and Contracting

• Contracting: Denison has committed to selling 5 million lbs of uranium, linked to $10 million in upfront funding.
• Future Sales: The company is in advanced negotiations for an additional 12 million lbs of sales commitments.
• Market Strategy: Unlike competitors who may prioritize price certainty, Denison leverages its low-cost Phoenix asset and robust balance sheet to pursue market-related pricing, aiming to capture upside potential.
• Inventory: As of December 31, Denison holds 1.85 million lbs of uranium (1.7 million lbs purchased + 150,000 lbs from MLAN North production) to support project financing and opportunistic sales.

3. Operational Updates: MLAN North (Saber Mine)

• Performance: The mine is a successful joint venture with Orano. In 2025, it produced just under 150,000 lbs (Denison’s share).
• Significance: On a 100% basis, the mine produces 600,000–700,000 lbs annually, making it one of the largest uranium mines in North America.

4. Future Growth: The Griffin Deposit

• Sequencing: Griffin is planned as a traditional underground mine.
• Funding: Denison intends to use cash flows generated from the Phoenix mine to internally fund the development of Griffin.
• Synergy: The goal is to extend the combined mine life to 16–18 years, producing over 100 million lbs of uranium in total.

5. Financial Position and Labor

• Liquidity: The company ended 2025 with just under $700 million in cash, equivalents, and investments.
• Labor Strategy: Denison utilizes an integrated project team approach, partnering with the construction firm Wood to manage engineering and EPCM (Engineering, Procurement, and Construction Management). Construction labor is sourced from existing pools in Saskatchewan and Western Canada.

6. Strategic Investments ("Team Denison")

• Philosophy: Denison invests in junior exploration companies (e.g., Kosa Resources, Foremost Clean Energy, Sky Harbor Resources) to amplify exposure to new discoveries in the Athabasca Basin without diverting internal focus from Phoenix.
• Partnership Model: Denison often vends non-core assets into these companies in exchange for equity and earn-in rights (e.g., the 70% earn-in option on the Wheeler North joint venture).

Synthesis and Conclusion

Denison Mines is transitioning from a developer to a producer, anchored by the Phoenix ISR project. The company’s strategy is defined by a "Denison-centric" approach: utilizing low-cost, high-grade assets (Phoenix) to fund future growth (Griffin) while maintaining a diversified portfolio of exploration interests. By leveraging the provincial power grid to insulate against diesel price volatility and maintaining a strong balance sheet, the company aims to remain a low-risk, high-reward player in the global uranium market. Investors should monitor upcoming construction milestones at Phoenix and further commercial contract announcements in the next 12–24 months.