MDU Construction Services Group got its start in 1997, but many of our companies have history going back ​decades. This historical timeline features milestones and noteworthy projects from our entire family of companies.

1917

Wagner-Smith Equipment Co., as it is known today, got its start in 1917 as The Charles M. Kelso Company.

1924

MDU Construction Services Group’s parent company was founded in 1924 as a small electric utility serving a handful of farm communities on the border of Montana and North Dakota. 

1935

Major league baseball played its first night game at Cincinnati’s Crosley Field. Wagner-Smith, today an MDU Construction Services Group company known as Wagner Industrial Electric, installed the stadium lights. President Franklin Roosevelt flipped the switch to turn on the lights by remote from the White House. The Reds, then called the Redlegs, played the Chicago Cubs. The Reds won 2-1.

1947

Oregon Electric Group, now known as On Electric Group, in Portland, Oregon, is founded. Today, it is one of the largest electrical contracting companies in the Northwest.

1957

Loy Clark Pipeline Co. is founded. It was the first pipeline construction company in Oregon and had just 12 employees. Capital Electric Construction Co. is also founded in 1957 in Kansas City, Missouri.

1966

E.S.I., Inc., is founded in Ohio.

1967

Capital Electric Line Builders in Riverside, Missouri, is founded.

1974

Bell Electrical Contractors in St. Louis is founded.

1980

Desert Fire Protection is founded in Las Vegas.

1982

Bombard Electric is founded in Las Vegas.

1983

International Line Builders in Portland is founded. Today, the company has locations in Oregon, Washington, Idaho and California.

1985

Our parent company realigns and changes its name to MDU Resources Group.

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.

2001

Capital Electric, Bell Electrical and ​On Electric Group join MDU Construction Services Group.

2002

Bombard Mechanical is founded in Las Vegas.

2005

The company enters the Las Vegas market with the acquisition of Bombard Electric and Bombard Mechanical.

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.

2007

MDU Construction Services Group acquires Lone Mountain Excavation & Utilities in Las Vegas.

2009

Capital Electric Construction keeps the lights on for the Chiefs, doing the Arrowhead Stadium renovation in Kansas City, Missouri.

2012

Bombard Renewable Energy is named the 13th largest solar contractor in the country, according to Solar Power World’s Top 100 list.

2013

MDU Construction Services Group is ranked No. 11 on the Top 600 specialty contractors list in the United States.

2014

Capital Electric Line Builders completes the biggest transmission line construction project in MDU Construction Services Group history: a 345-kV, double-circuit line stretching 108 miles from Wichita to Medicine Lodge, Kansas, and on to an interconnection point at the Oklahoma border.

MDU Construction Services Group moves up to No. 10 on ENR’s Top 600 Specialty Contractors list.

Several MDU Construction Services Group companies in Las Vegas take part in the construction of the LINQ entertainment district, including the High Roller, the tallest observation wheel in the world.

2015

MDU Construction Services Group ranks No. 8 on ENR’s Top 600 Specialty Contractors list.​

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​Our parent company, circa 1930s




Loy Clark-Circa 1940
Loy Clark