RS-48 Beach placer mineral deposits along localized paleoshorelines of the Western Interior Seaway RS-48 Beach Placer Mineral Deposits along Localized Paleoshorelines of the Western Interior Seaway, Upper Cretaceous Fox Hills Sandstone, Eastern Denver Basin, Colorado
RS-47 Reconnaissance of Potential Sand Sources in Colorado for Hydraulic Fracturing RS-47 Reconnaissance of Potential Sand Sources in Colorado for Hydraulic Fracturing
RS-46 Proceedings of the 43rd Forum on the Geology of Industrial Minerals RS-46 Proceedings of the 43rd Forum on the Geology of Industrial Minerals
RS-44 Geology and Mineral Resources of Saguache County RS-44 Geology and Mineral Resources of Saguache County, Colorado
RS-42 Geology and Mineral Resources of Lake County RS-42 Geology and Mineral Resources of Lake County, Colorado
RS-41 Available Coal Resources of the Williams Fork Formation in the Yampa Coal Field RS-41 Available Coal Resources of the Williams Fork Formation in the Yampa Coal Field, Routt and Moffat Counties, Colorado
RS-40 Geology and Mineral Resources of Park County RS-40 Geology and Mineral Resources of Park County, Colorado
RS-38 Availability of Coal Resources in Colorado: Somerset Coal Field RS-38 Availability of Coal Resources in Colorado: Somerset Coal Field, West-Central Colorado
RS-39 Gas Production Characteristics of the Rulison RS-39 Gas Production Characteristics of the Rulison, Grand Valley, Mamm Creek, and Parachute Fields
RS-37 Geology and Mineral Resources of Gunnison County RS-37 Geology and Mineral Resources of Gunnison County, Colorado
RS-35 Alkalic Igneous Rocks of Colorado and Their Associated Ore Deposits RS-35 Alkalic Igneous Rocks of Colorado and Their Associated Ore Deposits