IS-44 Colorado Mineral and Mineral Fuel Activity IS-44 Colorado Mineral and Mineral Fuel Activity, 1997
IS-45 Active Permitted Mine Operations in Colorado IS-45 Active Permitted Mine Operations in Colorado, 1996-1997
RS-35 Alkalic Igneous Rocks of Colorado and Their Associated Ore Deposits RS-35 Alkalic Igneous Rocks of Colorado and Their Associated Ore Deposits
OF-98-06 Preliminary Evaluation of Mineral and Mineral Fuel Potential of the 130 Tracts of State Trust Land Nominated by the Public for Inclusion in the Stewardship Trust (Round 1) (detail) OF-98-06 Preliminary Evaluation of Mineral and Mineral Fuel Potential of the 130 Tracts of State Trust Land Nominated by the Public for Inclusion in the Stewardship Trust (Round 1)
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
IS-17 Geology and Resource Potential of Strategic Minerals in Colorado IS-17 Geology and Resource Potential of Strategic Minerals in Colorado
OF-85-05 Metal Industry in Colorado: Forecasts to the Year 2002 OF-85-05 Metal Industry in Colorado: Forecasts to the Year 2002
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