A miner poses by the entrance to the Bullion Mine near American City (Gilpin County), Colorado.
Mine buildings--Colorado--American City--1900-1910.; American City (Colo.)--1900-1910.; Bullion Mine (Gilpin County, Colo.)--1900-1910.; Miners--Colorado--American City--1900-1910.; Mining--Colorado--American City--1900-1910.
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