Cameco operates and owns a controlling interest in the world's largest high-grade uranium mines and mills at McArthur River, Key Lake and Rabbit Lake, located in northern Saskatchewan. Through its wholly owned US subsidiaries, Cameco Resources, the company also obtains uranium production from operations at Smith Ranch-Highland in Wyoming and Crow Butte in Nebraska.
Cameco is the world's largest, low-cost uranium supplier providing 19% of world mine production.
Cameco continues to focus its exploration efforts predominantly on prospects in Canada and Australia which are the two areas of the world identified for their potential for higher grade, larger scale, economically attractive deposits.
In all its uranium operations, Cameco places the highest priority on environmental protection and worker health and safety and strives to incorporate these considerations into everything the company does.