|
Colorado Coal and Iron Development Company - 1893 |
Alamo Coal Company - 1930 |
|
Pike's Peak Fuel Company - 1915 |
Burn-It-All Fuel Company - 1927 |
|
Mitchell Coal and Land Company - 1903 |
East Colorado Springs Coal Company - 1906 |
|
Farmers Co-Operative Coal Company - 1908 |
Colorado Anthracyte Company - 1894 |
|
New Castle Coal and Mineral Land Company - 1914 |
Monument Valley Coal Company - 1911 |
|
Rocky Mountain Fuel Company - 1913
|
Colorado Capitol Coal Mining Company - 1911 |
