The Kemmerer coal field extends from Lincoln County into northern Uinta County, and is part of the Hams Fork coal region in western Wyoming . It includes coals within the Upper Cretaceous Adaville and Frontier formations exposed within the Lazeart syncline, which is a long, narrow, north-trending fold that parallels thrust faults associated with Sevier deformation in the Overthrust belt. As a result of this deformation, coal beds in the area typically dip 20–30 degrees westward, and offset along faults ranges from several hundred to more than 4,500 m (about 15,000 ft; Rubey and others, 1975). Both the Adaville and Frontier formations were deposited along the western edge of the Cretaceous foreland basin, where coastal plain, littoral, and shallow marine environments of the Western Interior Seaway migrated across the region (Roberts and Kirschbaum, 1995). The Cenomanian to Coniacian Frontier Formation consists of nearshore and coastal deposits, and the Santonian to Campanian Adaville Formation was deposited in beach and coastal plain settings (Roehler and others, 1977; Roberts and Kirschbaum, 1995; Lynds and Slattery, 2017). Between the two units is the Hilliard shale, which overlies the Frontier Formation and underlies the Adaville Formation. Marine rocks of the Hilliard Shale represent a large-scale transgression of the sea westwards. Coals in the Frontier Formation are divided into three stratigraphic coal groups: the Spring Valley coal group near the base (also known as ........

Kemmerer is a coal mine in Wyoming which comprises of three open-cut pits. The Kemmerer mine currently operates two tipples, called Elkol and Sorensen, and ships their coal to their customers by rail and truck.

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