IS-42 Colorado Minerals and Mineral Fuel Activity IS-42 Colorado Minerals and Mineral Fuel Activity, 1996
IS-40 Colorado Minerals and Mineral Fuel Activity IS-40 Colorado Minerals and Mineral Fuel Activity, 1995
IS-41 Active Permitted Mine Operations in Colorado IS-41 Active Permitted Mine Operations in Colorado, 1995-96
IS-39 Colorado Mineral and Mineral Fuel Activity IS-39 Colorado Mineral and Mineral Fuel Activity, 1994
OF-90-02 Geology and Mineral Evaluation of Mineral Claims within the Snowmass Wilderness Area in the Vicinity of the Colorado-Highland Marble Quarry OF-90-02 Geology and Mineral Evaluation of Mineral Claims within the Snowmass Wilderness Area in the Vicinity of the Colorado-Highland Marble Quarry, Conundrum Creek, Pitkin County, Colorado
RS-21 Precambrian Tungsten and Copper-Zinc Skarn Deposits of South-Central Colorado RS-21 Precambrian Tungsten and Copper-Zinc Skarn Deposits of South-Central Colorado
OF-80-08 The Effects of Mineral Conservation Legislation on Colorado’s Aggregate Industry OF-80-08 The Effects of Mineral Conservation Legislation on Colorado’s Aggregate Industry
RS-08 Proceedings of the Fifteenth Forum on Geology of Industrial Minerals-Industrial Minerals in Colorado and the Rocky Mountain Region RS-08 Proceedings of the Fifteenth Forum on Geology of Industrial Minerals: Industrial Minerals in Colorado and the Rocky Mountain Region
RS-11 Rare Earth Pegmatites of the South Platte District RS-11 Rare Earth Pegmatites of the South Platte District, Colorado
RS-02 Mineral Resources Survey of Mesa County: A Model Study RS-02 Mineral Resources Survey of Mesa County: A Model Study