Arch Coal, Inc. (Arch) is the coal producer. The Company sells substantially all of its coal to power plants, steel mills and industrial facilities. As of December 31, 2012, it operated, or contracted out the operation of, 32 active mines located in each of the coal-producing regions of the United States. The locations of its mines and access to export facilities enable them to ship coal worldwide. The Company's operating segments are the Powder River Basis (PRB) segment, with operations in Wyoming; the Western Bituminous (WBIT) segment, with operations in Utah and Colorado; the Appalachia (APP) segment, with operations in West Virginia, Kentucky, Maryland and Virginia; and its Illinois segment, which includes its operations in Illinois. Geology, coal transportation routes to consumers, regulatory environments and coal can vary from segment to segment. In August 2013, Arch Coal, Inc. completed the sale of its subsidiary, Canyon Fuel Company, LLC (Canyon Fuel) to Bowie Resources, LLC.