OF-02-12 Sand and Gravel Resources Adjacent to the Colorado River Valley OF-02-12 Sand and Gravel Resources Adjacent to the Colorado River Valley, Garfield County, Colorado
OF-02-13 History OF-02-13 History, Geology, and Environmental Setting of Selected Mines Near Ophir, Uncompahgre National Forest, San Miguel County, Colorado
OF-02-15 Evaluation of Bottom-Hole Temperatures in the Denver and San Juan Basins of Colorado (detail) OF-02-15 Evaluation of Bottom-Hole Temperatures in the Denver and San Juan Basins of Colorado
OF-02-08 Soil and Bedrock Conditions and Construction Considerations OF-02-08 Soil and Bedrock Conditions and Construction Considerations, North-Central Douglas County, Colorado
OF-01-21 Evaluation of Mineral and Mineral Fuel Potential of Larimer County State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-21 Evaluation of Mineral and Mineral Fuel Potential of Larimer County State Mineral Lands Administered by the Colorado State Land Board
OF-01-19 Evaluation of Mineral and Mineral Fuel Potential of Prowers County State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-19 Evaluation of Mineral and Mineral Fuel Potential of Prowers County State Mineral Lands Administered by the Colorado State Land Board
OF-01-10 Evaluation of Mineral and Mineral Fuel Potential of Huerfano and Custer Counties State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-10 Evaluation of Mineral and Mineral Fuel Potential of Huerfano and Custer Counties State Mineral Lands Administered by the Colorado State Land Board
OF-01-18 Evaluation of Mineral and Mineral Fuel Potential of Montezuma and Dolores Counties State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-18 Evaluation of Mineral and Mineral Fuel Potential of Montezuma and Dolores Counties State Mineral Lands Administered by the Colorado State Land Board
OF-01-15 Evaluation of Mineral and Mineral Fuel Potential of Jackson County State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-15 Evaluation of Mineral and Mineral Fuel Potential of Jackson County State Mineral Lands Administered by the Colorado State Land Board