America and Kazakhstan, including McArthur River-Key Lake, the world's largest uranium producer, and Cigar Lake, the world's highest grade uranium mine, both in Saskatchewan. Other operations in Saskatchewan include a mine and mill at Rabbit Lake, currently in care and maintenance. In the United States, Cameco operates uranium mines in the states of Nebraska and Wyoming through its US subsidiary Cameco Resources Inc. Cameco Resources was formed in 2007 through a restructuring of two wholly owned subsidiaries, Power Resources Inc. (Wyoming) and Crow Butte Resources, Inc. (Nebraska). In the province of Ontario, Cameco operates a uranium refinery in Blind River and a uranium conversion facility in Port Hope, which has faced opposition from some community groups. Cameco is the exclusive fuel supplier to Bruce Power, which supplies 30% of Ontario's electricity through its nuclear generating plant. It used to own part of Bruce Power, but it sold its interest in 2014. In 2004, Cameco spun off its gold mining operations in Kyrgyzstan, Mongolia and the USA to a newly formed public company, Centerra Gold. Cameco divested its remaining interest in Centerra on December 30, 2009. In January 2011, Cameco participated in the clean up of a ship-board uranium concentrate spill on the MCP Altona that had occurred on December 23, 2010. See also Uranium Participation Corporation Nuclear power Anti-nuclear movement in Canada World Uranium Hearing Nuclear power in Canada References External links Cameco's official site Companies listed on the New York Stock Exchange Companies listed on the Toronto Stock Exchange S&P/TSX 60 Nuclear fuel companies Uranium mining companies of Canada Companies based in Saskatoon Nuclear technology in Canada Mineral exploration Non-renewable resource companies established in 1988 1988 establishments in Saskatchewan