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Cameco McArthur River Key Lake Uranium Mine

Canada
Operational
Developer
Cameco
Capacity
0 MWe
Last updated
6/27/2026

Project overview

Reactor type
Underground uranium
Announced
2/17/2026
Projected operational
—

Notes

McArthur River and Key Lake produced 15.1 million pounds U3O8 in 2025. Cameco's 2025 total consolidated uranium production was 21.0 million pounds, exceeding revised guidance of up to 20 million pounds but 10% less than 2024's 23.4 million pounds. For 2026, McArthur River/Key Lake production is planned at 14-16.5 million pounds.

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