IS-70 Colorado Minerals and Mineral Fuel Activity Report 2004 IS-70 Colorado Minerals and Mineral Fuel Activity Report 2004
IS-73 Colorado Mineral and Energy Industry Activities 2005 IS-73 Colorado Mineral and Energy Industry Activities 2005
OF-05-11 History OF-05-11 History, Geology, and Environmental Setting of the Akron Mine, Gunnison National Forest
OF-05-03 Geologic Map of the Southern Half of the Culebra Peak Quadrangle OF-05-03 Geologic Map of the Southern Half of the Culebra Peak Quadrangle, Costilla and Las Animas Counties, Colorado
OF-04-03 Geologic Map of the Alma Quadrangle OF-04-03 Geologic Map of the Alma Quadrangle, Park and Summit Counties, Colorado
OF-03-20 Geologic Map of the Copper Mountain Quadrangle OF-03-20 Geologic Map of the Copper Mountain Quadrangle, Summit, Eagle, Lake, and Park Counties, Colorado