Alpha Natural Resources, Inc., together with its subsidiaries, engages in extracting, processing, and marketing steam and metallurgical coal in Kentucky, Pennsylvania, Virginia, West Virginia, and Wyoming. It operates through two segments, Eastern Coal Operations and Western Coal Operations. As of December 31, 2014, the company operated 60 mines and 22 coal preparation plants in Northern and Central Appalachia and the Powder River Basin. It also repairs and resells equipment and parts used in surface mining and supporting preparation plant operations; manufactures patented particulate scrubbers and filters for underground diesel engine applications; and rebuilds underground mining equipment. In addition, the company sells non-strategic assets, such as timber, gas, and oil rights; leases and sells non-strategic surface properties and reserves; and provides coal and environmental analysis services. It serves electric utilities, steel manufacturers, industrial customers, and energy traders and brokers. Alpha Natural Resources, Inc. was founded in 2002 and is based in Bristol, Virginia.