MDU Resources Announces Webcast of Analyst Conference Call

• Press Release
• Source: MDU Resources Group, Inc.
• On 11:45 am EDT, Wednesday September 30, 2009

BISMARCK, N.D.--(BUSINESS WIRE)--MDU Resources Group, Inc. (NYSE:MDU - News) will webcast its third quarter 2009 earnings release conference call Oct. 30 following the release of its results. Presenting the earnings results and guidance will be MDU Resources’ President and Chief Executive Officer Terry D. Hildestad and Executive Vice President, Treasurer and Chief Financial Officer Vernon A. Raile.

Related Quotes

Symbol	Price	Change
MDU	22.00	-0.43

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The webcast will begin at 1 p.m. EDT and can be accessed at www.mdu.com. A webcast replay and audio replay will be available. The dial-in number for audio replay is (800) 642-1687, or (706) 645-9291 for international callers, conference ID 32816963.

MDU Resources Group, Inc., a Fortune 500 company and 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, operating in three core lines of business: utility resources, energy and construction materials. MDU Resources includes electric and natural gas utilities, construction services, natural gas and oil production, natural gas pipelines and energy services, and construction materials and contracting. 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.

MDU Resources Group, Inc.
Phyllis A. Rittenbach, 701-530-1057
Director, Investor Relations