View of a hydraulic gold mine in Breckenridge, Summit County, Colorado; shows eroded embankments, falling water, jets of water from "monitor" nozzles, sluices, flumes, a crane, and miners. Mountains are in the background.
Gold Run Mine, a gold placer mine in Breckenridge, Summit County, Colorado; miners use hydraulic nozzles (monitors) fitted with rock counterbalances, miners with shovels stand inside the wash; shows pipes and sluice.
Miners pose by guy derricks near the partially constructed mill at the Oro Grande Mine near Breckenridge (Summit County), Colorado. A vertical tubular boiler is nearby.
Breckenridge (Colo.)--1880-1890.; Oro Grande Mine (Summit County, Colo.)--1880-1890.; Construction--Colorado--Breckenridge--1880-1890.; Hoisting machinery--Colorado--Breckenridge--1880-1890.; Hydraulic mining--Colorado--Breckenridge--1880-1890.;...