MDU Resources Group, Inc. is a diversified natural resource company. Montana-Dakota Utilities Co. (Montana-Dakota) is a public utility division of the Company. Montana-Dakota, through the electric and natural gas distribution segments, generates, transmits and distributes electricity and distributes natural gas. Cascade Natural Gas Corporation (Cascade), which is an indirect wholly owned subsidiary of MDU Energy Capital, distributes natural gas. Intermountain Gas Company (Intermountain) distributes natural gas. Great Plains Natural Gas Co., distributes natural gas in western Minnesota and southeastern North Dakota. he Company�s segments include electric, pipeline and energy services, exploration and production, construction materials and contracting and construction services. In March 2014, the Company announced that its subsidiary, Fidelity Exploration & Production Co, closed on the purchase of oil and natural gas production assets in Converse County Wyo.