IS-86 Colorado Mineral and Energy Industry Activities 2022-2023 IS-86 Colorado Mineral and Energy Industry Activities 2022-2023
IS-85 Colorado Mineral and Energy Industry Activities 2021-2022 IS-85 Colorado Mineral and Energy Industry Activities 2021-2022
IS-84 Colorado Mineral and Energy Industry Activities 2020-2021 IS-84 Colorado Mineral and Energy Industry Activities 2020-2021
IS-83 Colorado Mineral and Energy Industry Activities 2019-2020 IS-83 Colorado Mineral and Energy Industry Activities 2019-2020
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
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
OF-17-02 Geologic Map of the Johnstown Quadrangle OF-17-02 Geologic Map of the Johnstown Quadrangle, Larimer and Weld Counties, Colorado
IS-79 Colorado Mineral and Energy Industry Activities 2015-2016 IS-79 Colorado Mineral and Energy Industry Activities 2015-2016
OF-15-02 Geologic Map of the Castor Gulch Quadrangle OF-15-02 Geologic Map of the Castor Gulch Quadrangle, Moffat County, Colorado