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Fairfield mine, Meeker. Rio Blanco County, Colorado. 1911.
Feberite Tungsten mill, above Ferberite, Boulder Canyon. Boulder County, Colorado. March 4, 1917.
Gold King mill, La Plata County, Colorado. Circa 1936
Golden Cycle mine from Battle Mountain. Cripple Creek District. Teller County, Colorado. October 7, 1903.
Golden Cycle Mine. Victor, Colorado. Teller County, Colorado. 1917
  Hallenbeck placer mining operation. Lake County, Colorado. 1940..jpg  
Harris Mine at Mount Harris. Pagoda Quadrangle, Routt County, Colorado. 1912.
Harrison smelter and Leadville. Lake County, Colorado. 1908
Haughey Mine, 2 miles east of Craig. Moffat County, Colorado. July 1923.
Hossier shaft, Wolf Tongue Mining. Boulder County, Colorado. 1909.
Joe Dandy mine. Cripple Creek District. Teller County, Colorado. 1903.

Hallenbeck placer mining operation. Lake County, Colorado. 1940. Download Original Image
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