Bruce T. Imsdahl

Great Plains Natural Gas Co. operates as a distribution company and a transporter of natural gas to industrial, commercial and residential customers. It offers emergency gas services; online account services; low-income assistance programs; safety and education services for existing and new customers; and start, stop, and transfer services. The company was founded in 1966 and is headquartered in Fergus Falls, MN.

Cascade Natural Gas Corp. explores and distributes natural gas. It provides services through gas plants, propane and butane air systems. The company was founded by Lester Pettit, Spencer Clark and Stewart Matthews in 1953 and is headquartered in Seattle, WA.

Montana-Dakota Utilities Co. engages in the provision of natural gas and electric services to parts of Montana, North Dakota, South Dakota, and Wyoming. It distributes natural gas and generates and transmits electricity. The firm’s services include online account, payment options, start, stop or transfer, understanding bill, communications-bill inserts, low-income assistance program. The company was founded in 1924 and is headquartered in Bismarck, ND.