IS-39 Colorado Mineral and Mineral Fuel Activity IS-39 Colorado Mineral and Mineral Fuel Activity, 1994
RS-31 Coalbed Methane in the Upper Cretaceous Fruitland Formation RS-31 Coalbed Methane in the Upper Cretaceous Fruitland Formation, San Juan Basin, New Mexico and Colorado
OF-94-02 Coalbed Gas Composition in Upper Cretaceous Fruitland Formation OF-94-02 Coalbed Gas Composition in Upper Cretaceous Fruitland Formation, San Juan Basin, Colorado and New Mexico
RS-30 Geologic and Hydrologic Controls on Coalbed Methane: Sand Wash Basin RS-30 Geologic and Hydrologic Controls on Coalbed Methane: Sand Wash Basin, Colorado and Wyoming
GEO-1992-01 State Geological Survey Evaluation Report (First Edition) GEO-1992-01 State Geological Survey Evaluation Report (First Edition)
RS-29 Directory and Statistics of Colorado Coal Mines with Distribution and Electric Generation Map RS-29 Directory and Statistics of Colorado Coal Mines with Distribution and Electric Generation Map, 1989
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-25 Coal Resources of the Castle Rock (1/2° x 1°) Quadrangle RS-25 Coal Resources of the Castle Rock (1/2° x 1°) Quadrangle, Colorado
RS-27 Coal Resources of the Colorado Springs (1/2° x 1°) Quadrangle RS-27 Coal Resources of the Colorado Springs (1/2° x 1°) Quadrangle, Colorado
IS-17 Geology and Resource Potential of Strategic Minerals in Colorado IS-17 Geology and Resource Potential of Strategic Minerals in Colorado