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Uranium Mining, Development & Exploration

in the prolific Athabasca Basin

Wheeler River

Our Flagship Project

Denison has an effective 95% interest in Wheeler River, consisting of the Phoenix and Gryphon projects, which ranks as the largest undeveloped uranium mining project in the infrastructure rich eastern portion of the Athabasca Basin region.

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Uranium Mining, Development & Exploration

in the prolific Athabasca Basin

Exploration Portfolio

Overview

Denison's exploration and development portfolio consists of numerous projects covering approximately 385,000 hectares in the Athabasca Basin region, with a focus in the infrastructure rich eastern portion of the Athabasca Basin.

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Uranium Mining, Development & Exploration

in the prolific Athabasca Basin

McClean Lake Mine & Mill

Minority Interest in Operations

The McClean Lake project is host to several uranium deposits (with some mining planned to restart in 2025) and the McClean Lake mill, which is one of the world’s largest uranium processing facilities, licensed to process up to 24M lbs U3O8 per year.

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Diversified Athabasca Basin Asset Base with Superior Development Leverage

STRATEGIC PROJECT PORTFOLIO:

  • 95% effective interest in flagship Wheeler River project – largest undeveloped uranium project in the infrastructure rich eastern Athabasca Basin
  • 70.55% interest in emerging Waterbury Lake project, with Preliminary Economic Assessment stage development plans for the Tthe Heldeth Túé deposit (formerly J Zone).
  • Participating interests in development-stage assets operated by uranium “majors”, including 22.5% in McClean Lake (Orano), 25.17% in Midwest (Orano), and an effective 15% in Millennium (Cameco) through 50% ownership of JCU (Canada) Exploration Company, Limited
  • 2.2M lbs U3O8 of physical uranium held in North American storage facilities – acquired at an average cost of US$29.66/lb U3O8, as a long-term investment expected to enhance access to future project financing for Wheeler River
  • ~385,000 hectares of prospective exploration ground in the Athabasca Basin

Investor Hub

Wheeler River Video

ISR Method

As of February 2021

Denison Mines Corp.

Denison is a uranium mining, development, and exploration company with interests focused in the Athabasca Basin region of northern Saskatchewan, Canada. Denison’s shares are listed on the Toronto Stock Exchange under the symbol “DML” and on the NYSE American under the symbol “DNN.” 

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Annual General Meeting

May 12, 2025


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