MDU RESOURCES GROUP, INC. BUILDING A STRONG AMERICA

Construction services, namely, laying and construction of pipe lines, electric lines, and inside electrical wiring and cabling; management of energy-related construction projects, namely supervision of cable and pipeline magnetization and locating; highway site development and construction services; drilling and pumping of oil; and mining extraction services

Utility services, namely transmission and distribution of electricity; and distribution of natural gas

Production of energy; generation of electricity; and magnetization of metal cables and metal pipelines

Oil field survey and exploration