Contact Careers Subscribe

Uranium Development & Exploration

The Athabasca Basin

Wheeler River

Our Flagship Project

Denison has a 90% interest in the Wheeler River Joint Venture consisting of 19 unsurveyed mineral claims totaling 11,720 hectares in northern Saskatchewan. Denison has been the operator since November 10, 2004. The other partner is JCU (Canada) Exploration Company, Limited ("JCU") (10%).

Learn More >

Uranium Development & Exploration

The Athabasca Basin

Exploration Portfolio


Denison's exploration and development portfolio consists of numerous projects covering approximately 280,000 hectares in the Athabasca Basin region, with a focus in the infrastructure rich eastern portion of the Athabasca Basin.

Learn More >

Uranium Development & Exploration

The Athabasca Basin

McClean Lake and Mill Project

Core Project

The McClean Lake mill is one of the world’s largest uranium processing facilities – licensed to produce up to 24M lbs U3O8 per year and currently processing ~18M lbs U3O8 per year for the Cigar Lake mine under a tolling agreement.

Learn More >

Diversified Athabasca Basin Asset Base with Superior Development Leverage


  • 90% interest in flagship Wheeler River project – largest undeveloped uranium project in infrastructure rich eastern Athabasca Basin
  • 22.5% interest in operating McClean Lake Uranium Mill – 6M lbs U3O8 excess licensed capacity, +12% of global uranium production
  • Interests in NI 43-101 uranium mineral resources at McClean Lake, Midwest, and Waterbury Lake
  • ~280,000 hectares of prospective exploration ground in the Athabasca Basin
  • Internal sources of cash flow from management of Uranium Participation Corp. (TSX-U), and Denison's Closed Mines Services

Investor Hub

Wheeler River Video

ISR Method

As of February 2021

Denison Mines Corp.

Denison is a uranium exploration and development company with interests focused in the Athabasca Basin region of northern Saskatchewan, Canada. The Company's flagship project is the 90% owned Wheeler River Uranium Project, which is the largest undeveloped uranium project in the infrastructure rich eastern portion of the Athabasca Basin region of northern Saskatchewan. Denison's interests in Saskatchewan also include a 22.5% ownership interest in the McClean Lake joint venture ("MLJV"), which includes several uranium deposits and the McClean Lake uranium mill, contracted to process the ore from the Cigar Lake mine under a toll milling agreement, plus a 25.17% interest in the Midwest and Midwest A deposits, and a 66.90% interest in the Tthe Heldeth Túé ("THT," formerly J Zone) and Huskie deposits on the Waterbury Lake property. Each of Midwest, Midwest A, THT and Huskie are located within 20 kilometres of the McClean Lake mill.

About Us >

Denison Mines Project Update

July 2020

Denison's Closed Mines Operations

Denison’s Closed Mines Operations division provides complete mine decommissioning services to industry and government. The focus is physical care and maintenance of closed and closing mining properties. Other services include consulting for new and early stage mining projects in the areas of mine site development, closure planning, closure cost evaluation and environmental permitting.

Learn More >

Uranium Participation Corporation is a company that invests substantially all of its assets in uranium oxide in concentrates ("U3O8") and uranium hexafluoride ("UF6") (collectively "uranium"), with the primary investment objective of achieving appreciation in the value of its uranium holdings through increases in the uranium price. The shares are listed on the Toronto Stock Exchange under the symbol "U".

Learn More >

© 2021 Denison Mines Corp.
All rights reserved.

Subscribe to our Email List