Misty Lee October 5, 2020 MDU Resources Group Inc. [NYSE: MDU] loss -0.41% or -0.13 points to close at $31.51 with a heavy trading volume of 648632 shares. The company report on June 3, 2021 that MDU Resources Subsidiary Receives FERC Certificate on ND Natural Gas Pipeline Project. 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.