/EINPresswire.com/ -- BISMARCK, ND--(Marketwired - December 16, 2015) - MDU Resources Group, Inc. (NYSE: MDU) will webcast its year-end 2015 earnings and 2016 guidance conference call Feb. 4 following the release of its results.

The webcast will begin at 10 a.m. EST and can be accessed at www.mdu.com. Audio and webcast replays will be available. Audio will be available through Feb. 18 at (855) 859-2056, or (404) 537-3406 for international callers, conference ID 9233329.

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, pipelines and energy services, and construction materials and services. 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.

Contact:

Phyllis A. Rittenbach
Director, Investor Relations
(701) 530-1057

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