Keller Now COO at MDU Construction Services

MDU Construction Services Group (Bismark, N.D.): Craig Keller has been named COO of the company. He has worked for MDU Resources Group Inc. companies since 1986. MDU Construction Services Group Inc. is a wholly owned subsidiary of MDU Resources Group Inc. that specializes in electrical line construction, pipeline construction, inside electrical wiring, cabling and mechanical work, fire protection and distribution of specialty equipment. Details