View of a U.S. Gold Placers mining site beside the San Miguel River in Montrose or San Miguel County, Colorado. Two hydraulic monitor nozzles are used to wash gravel from the soil. A water pipeline feeds the nozzles. The pipe rests in wooden...
United States Gold Placers, Ltd.--1880-1890.; San Miguel River (Colo.)--1880-1890.; Gold mining.; Hydraulic mining.; Rivers.; Nozzles.
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