MDU Construction Services Group, Inc.

MDU Construction Services Group is the non-regulated utility construction services segment of MDU Resources Group, Inc., providing services that are essential to energy infrastructure networks, including electrical and mechanical services and connectivity.

MDU Construction Services Group, Inc. provides industry-leading utility construction services. The diverse group of companies specializes in constructing and maintaining electric and communications lines, gas pipelines, fire suppression systems, and external lighting and traffic signalization. The companies also provide expertise in utility excavation and inside electrical and mechanical services, and manufacture and distribute transmission line construction equipment and supplies. MDU Construction Services Group is authorized to operate in 43 states.

MDU Resources Group, Inc.

Founded in 1924, MDU Resources Group has been in business since 1924. The company got its start in the electric utility business. Since that time, MDU Resources has focused on its growth on areas in which it has expertise – in both regulated and non-regulated businesses.

MDU Resources Group is a major natural resources company that provides value-added natural resource products and related services that are essential to energy and transportation infrastructure. The company has been traded on the New York Stock Exchange since 1948 under the symbol MDU.