Our Clients

• Ringneck Energy and Feed, LLC
• Feeding South Dakota
• Dock 44
• South Dakota Department of Transportation
• South Dakota Game, Fish, & Parks
• Wyoming Department of Transportation
• United States Army Corp of Engineers
• United States Department of Interior
  • Bureau of Indian Affairs
  • National Park Service
• United States Department of Energy
• Burlington Northern Railroad
• Dakota Minnesota Eastern Railroad
• MW Kellogg-Brown & Root Companies
• Shell Mining
• AMAX Coal Company
• Atlantic Richfield
• Cypress Coal Company
• Peabody Coal Company
• American Colloid Company
• Midwest Development Corporation
• Chen & Associates Engineers & Scientists
• HKM & Associates
• Brosz Engineering
• Walmart
• Country Pride Coop
• CB&I Tank
• Paradigm Enterprises
• McConnel Excavating
• CHS Harvest States
• Land O Lakes Wheat Growers
• CC Hutchinson & Sons
• Johnson Bros. Company
• Flintco Constructive Solutions
• Sutton Bay Resort
• Graham Marsh Golf Design
• Canadian Pacific Railroad
• Rapid City, Pierre, & Eastern Railroad
• Balfour Beatty
• Glenn Barber & Associates
• Victory Bible Camp
• Black Hills State University Foundation
• Aurora-Brule Rural Water
• Anchors Away Resort
• Cone Ag Oahe
• Grain Corp
• Sunshine Bible Academy