MDU Resources Group, Inc. (NYSE:MDU) will webcast the keynote address at its Annual Stockholders Meeting on Tuesday, April 24.

The webcast of MDU Resources’ President and Chief Executive Officer Terry D. Hildestad’s presentation is scheduled to begin at approximately 12:10 p.m. EDT and can be accessed at www.mdu.com.

Senior management also will make a presentation at the American Gas Association Financial Forum at 2:20 p.m. EDT Monday, April 30, which also will be webcast and can be accessed at www.mdu.com.

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. MDU Resources includes natural gas and oil production, natural gas pipelines and energy services, construction materials and mining, construction services, electric and natural gas utilities, and independent power production. For more information about MDU Resources, see the company's Web site at www.mdu.com or contact the Investor Relations Department at investor@mduresources.com.

Contact:
     Phyllis A. Rittenbach
     Director of Investor Relations
     (701) 530-1057