MDU Resources Announces Retirement of Pipeline and Energy Services Executive

BISMARCK, N.D.--()--MDU Resources Group (NYSE: MDU) today announced that Steven L. Bietz, president and chief executive officer of its pipeline and energy services business, has elected to retire effective July 17, 2015, after a 34-year career with the company.

Bietz began his career in 1981 with the company’s utility business and transferred to the pipeline business in 1985, where he held a number of positions of increasing responsibility. He became president and CEO of WBI Holdings, Inc. and WBI Energy, Inc. (collectively WBI) in March of 2006. Prior to that, he had been executive vice president and chief operating officer since September 2002 and vice president-administration and chief accounting officer since November 1999.

Under his leadership, WBI has grown to operate 3,800 miles of regulated natural gas pipeline with over 1 bcf/day of system capacity and three natural gas storage fields with 193 bcf of working storage capacity, as well as 1,600 miles of non-regulated pipeline. He also was instrumental in initiating WBI’s evolution from a dry gas transmission and storage company to a multifaceted energy services and midstream business. That growth includes a 50 percent ownership of the Dakota Prairie refinery, the first greenfield refinery completed in the U.S. since 1976, which began operating on May 4, 2015.

“We thank Steve for his years of service and his dedication to the company, and wish him the best in retirement,” said David L. Goodin, president and CEO of MDU Resources Group.

About MDU Resources

MDU Resources Group, Inc., a member of the S&P MidCap 400 index, provides value-added natural resource products and related services that are essential to energy and transportation infrastructure, including regulated utilities and pipelines, construction materials and services, and exploration and production. For more information about MDU Resources, see the company's website at www.mdu.com or contact the Investor Relations Department at investor@mduresources.com.

Contacts

MDU Resources Group, Inc.
Financial:
Phyllis A. Rittenbach, 701-530-1057
Director - Investor Relations
or
Media:
Rick Matteson, 701-530-1700
Director of Communications and Public Affairs
or
Tim Rasmussen, 701-530-1069
Operating Company Public Relations Manager

Release Summary

MDU Resources Group today announced that Steven L. Bietz, president and chief executive officer of its pipeline and energy services business, has elected to retire effective July 17, 2015.

Contacts

MDU Resources Group, Inc.
Financial:
Phyllis A. Rittenbach, 701-530-1057
Director - Investor Relations
or
Media:
Rick Matteson, 701-530-1700
Director of Communications and Public Affairs
or
Tim Rasmussen, 701-530-1069
Operating Company Public Relations Manager