Journeys of observation /

Mining in Colorado : a history of discovery, development and production /
by: Henderson, Charles W. (Charles William), 1885-
Published: (1926)

Federal Oil Shale Program : hearings before the United States Senate Committee on Interior and Insular Affairs, Ninetieth Congress, first session, on Feb. 21, 22, 1967, Sept. 14, 15, 1967.
Published: (1967)

Mining in Colorado : a history of discovery, development and production /
by: Henderson, Charles William, 1885-
Published: (1926)

Locatable mineral reports for South Dakota and Colorado, provided to the U.S. Forest Service in fiscal years ... and ...
Published: (2001)

The Leadville drainage tunnel, Lake County, Colo. /
by: Elgin, Robert A., et al.
Published: (1949)

Economic geology of Gilpin county and adjacent parts of Clear Creek and Boulder counties, Colorado /
by: Bastin, Edson S. (Edson Sunderland), 1878-1953, et al.
Published: (1917)

Youth rides west : a story of the seventies /
by: Irwin, Will, 1873-1948
Published: (1925)

Mineral resources of the Willow Creek and Skull Creek Wilderness Study Areas, Moffat County, Colorado /
Published: (1990)

Leasable mineral and waterpower land classification map of the Raton 1⁰ x 2⁰ quadrangle, New Mexico and Colorado : lands withdrawn, classified, and prospectively valuable for leasable minerals; occurrences of other selected minerals; and lands withdrawn or classified for waterpower and reservoir sites /
by: DeCicco, Donald A.
Published: (1980)

Pegmatite investigations in Colorado, Wyoming and Utah 1942-1944 /
by: Hanley, John B. (John Bernard), 1913-
Published: (1950)

Mineral resources of the Indian Peaks study area, Boulder and Grand Counties, Colorado /
by: Pearson, Robert Carl, 1926-
Published: (1980)

Development of industrial minerals in Colorado /
Published: (2011)

Minerals in the economy of Colorado.

MIB. Mineral industries bulletin.

Mineral industries bulletin.

Mineral resource potential map of the Vasquez Peak Wilderness Study Area, and the St. Louis Peak and Williams Fork Roadless Areas, Clear Creek, Grand, and Summit Counties, Colorado /
Published: (1983)

Guidebook on fossil fuels and metals, eastern Utah and western-southwestern-central Colorado /
Published: (1978)

Observations on foreign mining in Mexico /
by: Resident
Published: (1838)

Colorado : its resources, parks, and prospects as a new field for emigration; with an account of the Trenchara and Costilla estates, in the San Luis park /
Published: (1869)

An assessment of the mineral resource potential of the San Isabel National Forest, south-central Colorado /
by: Taylor, Richard B. (Richard Bartlett)
Published: (1984)

Colorado; its gold and silver mines : farms and stock ranges, and health and pleasure resorts. Tourist's guide to the Rocky Mountains /
by: Fossett, Frank
Published: (1879)

Colorado : a historical, descriptive and statistical work on the Rocky mountain gold and silver mining region /
by: Fossett, Frank
Published: (1876)

The mines of Colorado /
by: Hollister, Ovando James, 1834-1892
Published: (1867)

The mines of Colorado.
by: Hollister, Ovando James, 1834-1892
Published: (1973)

The mines of Colorado /
by: Hollister, Ovando James, 1834-1892
Published: (1867)

Mineral resources of Colorado, first sequel /
Published: (1960)

Colorado; its gold and silver mines : farms and stock ranges, and health and pleasure resorts. Tourist's guide to the Rocky Mountains.
by: Fossett, Frank
Published: (1880)

Mineral resources of Colorado /
Published: (1947)

Colorado, its gold and silver mines : farms and stock ranges, and health and pleasure resorts : tourist's guide to the Rocky Mountains /
by: Fossett, Frank
Published: (1880)

The mines of Colorado /
by: Hollister, Ovando James, 1834-1892
Published: (1867)

Mineral resources of the Indian Peaks study area, Boulder and Grand Counties, Colorado /
by: Pearson, Robert Carl, 1926-, et al.
Published: (1980)

Memoria sobre el influjo de la minería en la agricultura, industria, poblacion y civilizacion de la Nueva-España en sus diferentes épocas : con varias disertaciones relativas á puntos de economía pública con el propio ramo /
by: Delhuyar, Fausto, 1755-1833
Published: (1825)

Mineral resource potential maps of the Maroon Bells-Snowmass Wilderness and additions, Gunnison and Pitkin Counties, Colorado /
Published: (1985)

Mineral resource potential of the Piedra Wilderness study area, Archuleta and Hinsdale Counties, Colorado /
Published: (1983)

Mining and civilization /
by: Rickard, T. A. (Thomas Arthur), 1864-1953
Published: (1927)

Economic geology of Gilpin county and adjacent parts of Clear Creek and Boulder counties, Colorado /
by: Bastin, Edson S. (Edson Sunderland), 1878-1953, et al.
Published: (1917)