ON-007-08 Historic Mining Districts of Colorado (detail) ON-007-08D Historic Metal Mining Districts of Colorado (Data) – v20201112
OF-78-08 Location Map of Drill Holes Used for Coal Evaluation in the Denver and Cheyenne Basins ON-OF-78-08M Select geological logs associated with coal resources, Denver and Cheyenne Basins, Colorado
IS-82 Colorado Mineral and Energy Industry Activities 2018-2019 IS-82 Colorado Mineral and Energy Industry Activities 2018-2019
IS-81 Colorado Mineral and Energy Industry Activities 2017-2018 IS-81 Colorado Mineral and Energy Industry Activities 2017-2018
RS-47 Reconnaissance of Potential Sand Sources in Colorado for Hydraulic Fracturing RS-47 Reconnaissance of Potential Sand Sources in Colorado for Hydraulic Fracturing
IS-80 Colorado Mineral and Energy Industry Activities 2016-2017 IS-80 Colorado Mineral and Energy Industry Activities 2016-2017
MS-12 Map of Licensed Coal Mines in Colorado as of 01 June 1978 (detail) MS-12 Map of Licensed Coal Mines in Colorado as of 01 June 1978
B-05 Reconnaissance of the Geology of the Rabbit Ears Region B-05 Reconnaissance of the Geology of the Rabbit Ears Region, Routt, Grand, and Jackson Counties, Colorado
OF-16-02 Geologic Map of the Watkins Quadrangle OF-16-02 Geologic Map of the Watkins Quadrangle, Arapahoe and Adams Counties, Colorado
IS-79 Colorado Mineral and Energy Industry Activities 2015-2016 IS-79 Colorado Mineral and Energy Industry Activities 2015-2016