Cameco Corporation (Cameco) is engaged in the exploration for and the development, mining, refining, conversion, fabrication and trading of uranium for sale as fuel for generating electricity in nuclear power reactors in Canada and other countries. The Company operates through three segments: Uranium, fuel services and NUKEM. The uranium segment involves the exploration for, mining, milling, purchase and sale of uranium concentrate. The fuel services segment involves the refining, conversion and fabrication of uranium concentrate and the purchase and sale of conversion services. The NUKEM segment acts as a market intermediary between uranium producers and nuclear-electric utilities. Cameco conducts a portion of its exploration, development, mining and milling activities through joint operations located around the world. Cameco's Canadian uranium joint operation interests are McArthur River, Key Lake and Cigar Lake.