Rook I Project

NexGen Energy Ltd. (NexGen) is proposing to develop an underground uranium mine on the Patterson Lake peninsula in the southwestern Athabasca Basin in northern Saskatchewan, approximately 155 km north of the town of LaLoche, SK. The proposed Rook l mine would produce up to 14 million kg of U₃O₈ annually for twenty-four years.

Under the Nuclear Safety and Control Act, NexGen's proposal requires approval and licensing by the Canadian Nuclear Safety Commission (CNSC). An environmental assessment (EA) conducted under the Canadian Environmental Assessment Act, 2012 is required, and an EA decision affirming that the proposed activities will not cause significant adverse environmental effects, before the CNSC can make a licensing decision on this proposal.

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