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