Published: February 9, 2022 |

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Denison Mines Corp. said the Canadian Nuclear Safety Commission (CNSC) has approved an amendment to the uranium mine and mill license for the McClean Lake Operation to allow for the expansion of the JEB Tailings Management Facility (TMF).

“The McClean Lake mill remains a strategically significant asset in the Athabasca Basin region — representing the only uranium milling facility currently operating in Canada,” said David Cates, Denison’s president and CEO.

“The amendment to the operating license for the McClean Lake Operation allows for the expansion of the TMF, such that the facility will be well positioned to serve as a regional milling center for current and future uranium mining projects in the eastern portion of the Athabasca Basin for many years to come,” added Cates.

“Denison congratulates Orano, as our partner and the operator of the McClean Lake Operation, on obtaining approval for the environmentally responsible approach put forward to expand the capacity of the TMF without resulting in a significant impact to the operation’s overall footprint,” concluded Cates.

The commission considered the adequacy of the proposed measures for protecting the environment, the health and safety of persons, national security, and other international obligations. The operation’s past operating performance, environmental protection, radiation protection, Indigenous consultation and engagement, decommissioning plans, and other safety and control areas were also examined. The TMF is designed in line with the Global Industry Standard on Tailings Management developed by the International Council of Mining and Metals (ICMM).

The amended license remains valid until June 30, 2027.

About Denison
Denison is a uranium exploration and development company with interests focused in the Athabasca Basin region of northern Saskatchewan, Canada. In addition to its effective 95 percent interest in the Wheeler River project, Denison’s interests in the Athabasca Basin include a 22.5 percent ownership interest in the McClean Lake joint venture, which includes several uranium deposits and the McClean Lake uranium mill that is contracted to process the ore from the Cigar Lake mine under a toll milling agreement, plus a 25.17 percent interest in the Midwest Main and Midwest A deposits, and a 66.90 percent interest in the Tthe Heldeth Túé (THT), and Huskie deposits on the Waterbury Lake property. The Midwest Main, Midwest A, THT and Huskie deposits are each located within 20 kilometers of the McClean Lake mill.

Through its 50 percent ownership of JCU, Denison holds additional interests in various uranium project joint ventures in Canada.

Denison is also engaged in mine decommissioning and environmental services through its Closed Mines group (formerly Denison Environmental Services), which manages Denison’s Elliot Lake reclamation projects and provides post-closure mine care and maintenance services to a variety of industry and government clients.

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