 BISMARCK, N.D., June 3, 2021 PRNewswire -- WBI Energy, Inc., the pipeline subsidiary of MDU Resources Group, Inc. NYSE: MDU, on Tuesday received an order from the Federal Energy Regulatory Commission issuing a certificate of public convenience and necessity on the North Bakken Expansion project, a natural gas pipeline expansion with capacity to transport 250 million cubic feet of natural gas per day from the Bakken in North Dakota. 