Cliffs Natural Resources Inc. is an international mining and natural resources company. The Company is an iron ore producer and a producer of metallurgical coal. The Company's operations are organized according to product category and geographic location: U.S. Iron Ore, Eastern Canadian Iron Ore, North American Coal, Asia Pacific Iron Ore, Asia Pacific Coal, Latin American Iron Ore, Ferroalloys, and its Global Exploration Group. The Company operates in four segments: U.S. Iron Ore, Eastern Canadian Iron Ore, North American Coal and Asia Pacific Iron Ore. In the United States, it operates five iron ore mines in Michigan and Minnesota, five metallurgical coal mines located in West Virginia and Alabama and one thermal coal mine located in West Virginia. It also operates two iron ore mines in Eastern Canada that primarily provide iron ore to the seaborne market for Asian steel producers. On May 12, 2011, the Company completed the acquisition of Consolidated Thompson Iron Mining Limited.