Mining, particularly of trona, is the major industry in Sweetwater County, and the railroad is still a major presence in the area. With the interstate, railroad, fiber optics and other important infrastructures, Rock Springs and Green River make ideal business locations.

900-700 Employees

FMC Wyoming, 888

Halliburton, 720

699-500 Employees

Sweetwater County School District No. 1, 578

General Chemical Company, 520

499-400 Employees

Bridger Coal, 443

OCI, 430

Solvay Minerals, 426

PacificCorp, 426

399-200 Employees

Memorial Hospital, 322

Schlumberger Pumping & Well Service, 335

Sweetwater County School District No. 2, 319

City of Rock Springs, 218

Questar Market Group, 208

Simplot, 205

Union Pacific Railroad, 200

199-100 Employees

Western Wyoming College, 197

B J Services, 188

Basic Energy Services, 180

Black Butte Coal, 178

Church & Dwight, 165

Bunning Transfer Company, 160

Little America, 150

BP American, 123

City of Green River, 121

Williams Energy Services, 105

Castle Rock Hospital Dist., 103

99-50 Employees

Wyoming Department of Transportation, 92

Exxon Company, USA, 85

Western Gas, 74

Peterson Oilfield Service, 65

Moneyhun Companies, 58