Hallador Energy Company, through its subsidiaries, engages in the production of steam coal in the State of Indiana for the electric power generation industry. The company owns the Oaktown Mine 1 and Oaktown Mine 2 underground mines in Oaktown; Freelandville Center Pit surface mine in Freelandville; and Prosperity Surface mine in Petersburg, Indiana. It is also involved in gas exploration activities in Indiana; and operation of logistics transport facility. Hallador Energy Company was founded in 1949 and is headquartered in Terre Haute, Indiana. Address: 1183 East Canvasback Drive, Terre Haute, IN, United States, 47802