EQT Corporation, together with its subsidiaries, operates as an integrated energy company in the United States. It operates in three segments: EQT Production, EQT Midstream, and Distribution. The EQT Production segment engages in the exploration, development, and production of natural gas, natural gas liquids, and crude oil in the Appalachian Basin. As of December 31, 2012, it had 6.0 trillion cubic feet of proved reserves across 3.5 million acres. The EQT Midstream segment provides natural gas gathering, processing, transmission, and storage services to the independent third parties in the Appalachian Basin. This segment has approximately 10,300 miles of gathering lines. The Distribution segment distributes and sells natural gas to residential, commercial, and industrial customers in southwestern Pennsylvania, West Virginia, and eastern Kentucky. This segment serves approximately 277,400 customers consisting of 258,500 residential, and 18,900 commercial and industrial customers. EQT Corporation was founded in 1925 and is headquartered in Pittsburgh, Pennsylvania.