In his Annual Report of the Territorial Geologist to the Governor of Wyoming 1890, Louis D. Ricketts wrote, , The coal of this district has little other use than that of supplying a local market., Years later, nothing could be further from the truth. The United States uses approximately one billion tons of coal a year, with about 390 million tons coming from Campbell County, Wyoming. Since large-scale commercial coal production began in Campbell County in the mid-1970s, most coal companies have changed names, owners, and boundaries several times. To let those changes go unrecorded would be to lose the very beginning of coal in Campbell County.