• Amalgamating room, Caribou Mill 

        Contributor:Arthur Lakes Library; Collier's Rocky Mountain Scenery; Colorado Digitization Project; Russell L. and Lyn Wood Mining History Archive
        Date:1873?-1876?
        Stereopair showing two of the ten amalgamating pans at the Caribou Mill, Boulder County, Colorado. The amalgamated silver from these pans was sent to the melting room for retorting and pouring into bars. The Caribou Mill ...
      • Roasting cylinders, Caribou Mill 

        Contributor:Arthur Lakes Library; Collier's Rocky Mountain Scenery; Colorado Digitization Project; Russell L. and Lyn Wood Mining History Archive
        Date:1873?-1876?
        Stereopair of roasting cylinders at the Caribou Mill. Crushed ore was roasted in these cylinders for eight hours to desulfurize, expel base metals, and chlorodize the remaining pulp. After roasting the ore was amalgamated ...
      • Amalgamating room, Caribou Mill 

        Contributor:Arthur Lakes Library; Collier's Rocky Mountain Scenery; Colorado Digitization Project; Russell L. and Lyn Wood Mining History Archive
        Date:1873?-1876?
        Stereopair showing two of the ten amalgamating pans at the Caribou Mill, Boulder County, Colorado. The amalgamated silver from these pans was sent to the melting room for retorting and pouring into bars. The Caribou Mill ...
      • Caribou Mill, Nederland 

        Contributor:Arthur Lakes Library; Collier's Rocky Mountain Scenery; Colorado Digitization Project; Russell L. and Lyn Wood Mining History Archive
        Date:1873?-1876?
        Stereopair showing the Caribou Mill, which was located along Boulder Creek in Nederland, Boulder County, Colorado, four miles from the Caribou Mine. The Caribou Mill was built in 1870-1871 by A. D. Breed and sold to the ...