The Rocky Mountain Fuel Company was a coal mining company located in Colorado, operating mines in Louisville, Lafayette, and other locations north and west of Denver. The company was founded in 1890 by John J. Roche to supply coal to sugar beet factories. During the 1930s, the company was the second-largest producer of coal by volume in the state of Colorado. However, the company was severely impacted by the Great Depression, declining productivity of local coal deposits, and the increased popularity of natural gas, and went bankrupt in 1944.