Gary Brennan, PE - President

Billy Doerr, PE - Area Manager

109 S. Main Box 357

Bowman, ND 58623

Ph: 701-523-3340

Fx: 701-523-5243

Zach Gaaskjolen, PE - Area Manager

501 9th Ave. SE Box 178

Stanley, ND 58784

Ph: 701-628-3340

Fx: 701-628-3341

Brady Bertram, PE - Area Manager

504 12th St. NE

Watford City, ND 58854

Ph: 701-842-3526

2309 W 50th Street

Sioux Falls, SD 57105

Ph: 605-336-1676

Fx: 605-336-1853

Jason Hanson, PE - Area Manager

3561 Whitewood Service Rd. Box 636

Sturgis, SD 57785

Ph: 605-347-2722

Fx: 605-347-2822

White Lake, SD

Ron Gillen, PE - Area Manager

White Lake, SD 57383

Ph: 605-249-2277

Fx: 605-249-2153

Winner, SD

John Calhoon, RLS 

32256 276th St. 

Winner, SD 57580

Ph: 605-842-1645

Fx: 605-842-1075

Derek McTighe, PE/RLS - Vice President - Area Manager

3030 Airport Rd Box 23

Pierre, SD 57501

Ph: 605-224-1123

Fx: 605-224-0659