With more than 7,500 skilled employees and authorization to work in 44 states, MDU Construction Services Group provides indus ... try-leading construction services with a focus on safety. We provide a full spectrum of construction solutions, from underground utilities and excavation to electrical, mechanical and fire suppression systems as well as transmission line construction. Our diverse group of companies also manufactures and distributes transmission line construction equipment and supplies. MDU Construction Services is a subsidiary of MDU Resources Group, Inc. See our social media disclosure statement: http://bit.ly/smdiscls read more