Plans announced to expand Bakken natural gas delivery volumes
May 19, 2010 — Williston Basin Interstate Pipeline Company, the wholly owned natural gas transmission pipeline subsidiary of MDU Resources Group, Inc. (NYSE:MDU), announced plans to expand its existing natural gas pipeline capacity by approximately 33 percent in the Bakken production area in northwestern North Dakota. The proposed expansion would add up to 30 million cubic feet per day (MMcf/d) to existing volumes from the Bakken production area for delivery to Northern Border Pipeline. More information

Williston Basin Interstate Pipeline Company provides natural gas transportation, storage and gathering services through an interstate pipeline system located in Montana, North Dakota, South Dakota and Wyoming.

Williston Basin is part of the WBI Holdings family of companies which provide essential services to the energy industry and is an indirect wholly owned subsidiary of MDU Resources Group (NYSE: MDU), a Fortune 500 company and a member of the S&P MidCap 400 index.

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