National Fuel Gas Company operates as a diversified energy company in the United States. The company's Utility segment sells natural gas or provides natural gas transportation services to approximately 732,600 customers in Buffalo, Niagara Falls, and Jamestown, New York; and Erie and Sharon, Pennsylvania. Its Pipeline and Storage segment provides interstate natural gas transportation and storage services through an integrated gas pipeline system extending from southwestern Pennsylvania to the New York-Canadian border, and eastward to Ellisburg and Leidy, Pennsylvania; and owns and operates 27 underground natural gas storage fields, as well as 4 other underground natural gas storage fields. This segment also transports natural gas for Distribution Corporation, as well as for other utilities, industrial customers, and power producers in New York State. It owns and operates the Empire Pipeline, a 249-mile integrated pipeline system. The company's Exploration and Production segment engages in the exploration, development, and purchase of natural gas and oil reserves in California and the Appalachian region of the United States and in Kansas. As of September 30, 2012, this segment had proved developed and undeveloped reserves of 42,862 thousand barrels of oil and 988,434 million cubic feet of natural gas. Its Energy Marketing segment markets natural gas to industrial, wholesale, commercial, public authority, and residential customers primarily in western and central New York and northwestern Pennsylvania. The company also owns approximately 95,000 acres of timber property and manages an additional 3,000 acres of timber cutting rights; and builds, owns, and operates natural gas processing and pipeline gathering facilities in the Appalachian region. National Fuel Gas Company was founded in 1902 and is based in Williamsville, New York.