MDU Resources Group, Inc. (NYSE:MDU) will webcast its presentation to the financial community Dec. 6. MDU Resources’ President and Chief Executive Officer Terry D. Hildestad and Executive Vice President, Treasurer and Chief Financial Officer Vernon A. Raile will discuss the company’s operational strategy and financials, and 2007 guidance.

The webcast will begin at 12:30 p.m. EST and can be accessed at www.mdu.com. A webcast replay will be available.

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, construction materials and mining, domestic and international independent power production, natural gas pipelines and energy services, electric and natural gas utilities, and construction services. 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