2006
Wagner Industrial Electric, Inc. is formed in May 2006 by merging the industrial electric divisions of two long-standing electrical contractors, Capital Electric Construction Company in Kansas City, Missouri, and The Wagner-Smith Company in Dayton, Ohio.
2005
The company enters the Las Vegas market with the acquisition of Bombard Electric and Bombard Mechanical.
2004
MDU Construction Services Group joins the Electrical Transmission & Distribution Partnership as a founding member.
1997
MDU Resources Group forms a new construction services division, today known as MDU Construction Services Group, with the acquisition of two electric services companies in Portland, Oregon.
1983
International Line Builders is founded. Today, the company has locations in Oregon, Washington, Idaho and California.