A subsidiary of MDU Resources Group, Inc., MDU Construction Services Group, Inc. companies offer utilities and large manufacturing, commercial, government and institutional customers a diverse array of products and services. The construction services segment specializes in electrical line construction, pipeline construction, inside electrical wiring and cabling, mechanical services and the manufacture and distribution of specialty equipment.

MDU Resources includes natural gas and oil production, construction materials and mining, domestic and international independent power production, electric and natural gas utilities, natural gas pipelines and energy services, and utility services.