Producer of coal in Northern and Central Appalachia with a range of mid to high British thermal unit (Btu), low to medium sulfur steam and metallurgical coal. The company, through its subsidiaries it engages in the production, processing, and sale of steam and metallurgical coal. It offers coal products from 11 regional mining complexes, which, as of December 31, 2006, were supported by 12 active underground mines, 13 active surface mines, and 8 preparation plants located throughout West Virginia, Kentucky, Maryland, and Illinois. The company owned or controlled approximately 317 million tons of metallurgical quality coal reserves and approximately 746 million tons of steam coal reserves. It primarily serves utilities and industrial customers in the eastern region of the United States.