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  • All fields: (hydraulic
(722 results)



Display: 50

    • Steven's Hydraulic Mines, near Oro City

    • Miners stand near Steven's Hydraulic Mine near Oro City (Leadville), Lake County, Colorado. The men use a hydraulic nozzle or monitor to spray water into the mine pit.
    • Oro City (Colo.)--1870-1880.; Hydraulic mining--Colorado--Oro City--1870-1880.; Miners--Colorado--Oro City--1870-1880.; Mining--Colorado--Oro City--1870-1880.
    • 1877
    • Hydraulic mining, Virginia City M.T.

    • View of a hydraulic mining operation in a stream bed in Virginia City, Montana. Shows a hose with a monitor nozzle, sluices, and a flume; water falls from ground level.
    • Virginia City (Mont.)--1870-1880.; Hydraulic mining--Montana--Virginia City--1870-1880.; Miners--Montana--Virginia City--1870-1880.; Mining--Montana--Virginia City--1870-1880.
    • [between 1872 and 1878]
    • Hydraulic mining. Miners piping off top dirt

    • View of a man using "Hydraulic Chief" type nozzles to aim jets of water at an eroded bluff, in (probably) California. Another man stoops in the gold mine, wearing a raincoat.
    • Hydraulic mining--California--1860-1880.; Miners--1910-1920.; Mining--California--1860-1880.
    • [between 1865 and 1880?]
    • Early placer mining

    • Placer miners work near a sluice in Russell Gulch, Gilpin County, Colorado. Their tools include wheelbarrows, shovels, picks, and pitchforks. Monitors spray water, mine buildings are on the surrounding hills. David Henderson is in the foreground,...
    • Russell Gulch (Colo.)--1860-1870.; Gold mining--Colorado--Russell Gulch--1860-1870.; Hydraulic mining--Colorado--Russell Gulch--1860-1870.; Miners--Colorado--Russell Gulch--1860-1870.; Mining--Colorado--Russell Gulch--1860-1870.;...
    • [between 1860 and 1870]
    • Rollinsville, Colorado

    • A hydraulic mine juts into a body of water, possibly near Rollinsille, Colorado.
    • Rollinsville (Colo.)--1900-1920.; Hydraulic mining--Colorado--Rollinsville--1900-1920.
    • [between 1900 and 1920?]
    • Hendrie & Bolthoff Manufacturing & Supply Company

    • Men and children, probably employees, pose on and near horse-drawn wagons at the Hendrie and Bolthoff Manufacturing and Supply Company on the corner of 17th (Seventeenth) and Wynkoop Streets in downtown Denver, Colorado. The four-story brick...
    • Hendrie & Bolthoff Manufacturing & Supply Co. (Denver, Colo.)--1900-1910.; Denver (Colo.)--1900-1910.; Carts & wagons--Colorado--Denver--1900-1910.; Commercial facilities--Colorado--Denver--1900-1910.; Industry--Colorado--Denver--1900-1910.;...
    • [between 1902 and 1910?]
    • Hydraulic mining, Park County

    • View of a gold placer mine in Park County, Colorado; shows a steam [?] powered crane with lettering: "Snowstorm Hydraulic Co.," and a boulder in its grasp. Across a stream, on tailings, a miner runs a "monitor" nozzle.
    • Park County (Colo.)--1880-1900.; Gold mining--Colorado--Park County--1880-1900.; Hoisting machinery--Colorado--Park County--1880-1900.; Hydraulic mining--Colorado--Park County--1880-1900.; Miners--Colorado--Park County--1880-1900.;...
    • [between 1880 and 1900?]
    • Hydraulic mining Leadville

    • A miner stands in a ravine and aims a hydraulic nozzle or monitor as part of a placer mining operation near Leadville, Lake County, Colorado.
    • Leadville (Colo.)--1880-1890.; Hydraulic mining--Colorado--Leadville--1880-1890.; Miners--Colorado--Leadville--1880-1890.; Mining--Colorado--Leadville--1880-1890.
    • [between 1880 and 1890]
    • Hydraulic placer mining class

    • View of a Public Works Administration hydraulic gold mining class, in Denver, Colorado; shows men with a rocker sluice and gold pans. One wears high boots, another smokes a cigarette.
    • United States. Public Works Administration.--1930-1940.; Sluices--Colorado--Denver--1930-1940.; Denver (Colo.)--1930-1940.; Gold mining--Colorado--Denver--1930-1940.; Hydraulic mining--Colorado--Denver--1930-1940.;...
    • [between 1930 and 1940?]
    • Hydraulic placer mining class

    • View of a Public Works Administration hydraulic gold mining class, in Denver, Colorado; shows men with a rocker sluice and gold pans. One wears high boots and uses a shovel.
    • United States. Public Works Administration.--1930-1940.; Denver (Colo.)--1930-1940.; Gold mining--Colorado--Denver--1930-1940.; Hydraulic mining--Colorado--Denver--1930-1940.; Miners--Colorado--Denver--1930-1940.; Mining...
    • [between 1930 and 1940?]
    • Hydraulic mining, Virginia City, Montana

    • View of a hydraulic mining operation with men with hoses and monitor nozzles, Virginia City, Montana. Shows one story frame buildings and a rock and wood strewn gully.
    • Virginia City (Mont.)--1870-1880.; Hydraulic Mining--Montana--Virginia City--1870-1880.
    • between 1872 and 1878
    • Hydraulic mining. The flume - near Smartsville, Yuba County

    • View of a wooden flume on a high trestle, for placer gold mines near Smartville, Yuba County, California.
    • Smartville (Calif.)--1860-1880.; Flumes--California--Yuba County--1860-1880.; Hydraulic mining--California--Yuba County--1860-1880.; Mining--California--Yuba County--1860-1880.
    • [between 1865 and 1880?]
    • Hydraulic Mining

    • View of mined slopes in Colorado; man in wide brim hat uses a nozzle for hydraulic placer gold mining, shows frame buildings.
    • Gold mining--Colorado--1890-1910.; Hydraulic mining--Colorado--1890-1910.; Miners--Colorado--1890-1910.; Mining--Colorado--1890-1910.
    • [between 1890 and 1910?]
    • Hydraulic dredges

    • Two hydraulic placer gold mining dredges (probably the Eleanor Dredges, east of Golden), Colorado. A solitary man poses nearby.
    • Dredges--Colorado--1900-1910.; Gold mining--Colorado--1900-1910.; Hydraulic mining--Colorado--1900-1910.; Mining--Colorado--1900-1910.
    • [1900?]
    • Clear Creek Series - Russell Gulch

    • Gold miners aim water jets at embankments in this Russell Gulch, Gilpin County, Colorado placer mine; men watch the hydraulic mining operation.
    • Russell Gulch (Colo.)--1860-1870.; Hydraulic mining--Colorado--Russell Gulch--1860-1870.; Mining--Colorado--Russell Gulch--1860-1870.
    • [between 1860 and 1970]
    • Hydraulic mine near Leadville, Colo.

    • View of an unidentified hydraulic mine near Leadville in Lake County, Colorado. A miner directs a monitor nozzle to excavate and wash gravel from the ground. Shows a metal pipe attached to the nozzle. Mountains are in the distance.
    • Lake County (Colo.)--1880-1900.; Hydraulic mining.; Miners.; Nozzles.
    •  
    • Hydraulic mine near Leadville, Colo.

    • View of an unidentified hydraulic mine near Leadville in Lake County, Colorado. A miner operates a large mechanical crane, or hoist, with a forked basket The device has a metal frame and counter-weight and is supported on a timber upright. Cables...
    • Lake County (Colo.)--1880-1900.; Hoisting machinery.; Hydraulic mining.; Miners.; Tipples.
    •  
    • Hydraulic mining. The sluice blocks

    • View of a placer gold mine sluice between eroded embankments in California.
    • Sluices--California--1860-1880.; Hydraulic mining--California--1860-1880.; Mining--California--1860-1880.
    • [between 1865 and 1880?]
    • U.S.G.P.

    • Aerial view of a U.S. Gold Placer Company hydraulic placer mine site beside the San Miguel River in Montrose County or San Miguel County, Colorado. A man poses on a hillside. Water from hydraulic monitors (nozzles) sprays over gravel in the...
    • San Miguel River (Colo.)--1880-1890.; Gold mining--Colorado--1880-1890.; Hydraulic mining--Colorado--1880-1890.; Rivers--Colorado--1880-1890.
    •  
    • Seeking Gold with Water Pressure.

    • A man stands near a high power water hose as part of a hydraulic mining operation in California. The man stands in a deep pit surrounded by a rocky landscape.
    • Gold miners--California--1890-1920.; Gold mining--California--1890-1920.; Hydraulic mining--California--1890-1920.
    • [between 1890 and 1915]
    • Hydraulic gold mining, Alder gulch, near Virginia City

    • Miners sit and stand near hydraulic mining equipment at a placer mining operation in Alder gulch, Madison County, Montana. Water runs from the top of the gulch. Shows sluice boxes; water sprays from a monitor nozzle.
    • Alder Gulch (Madison County, Mont.)--1870-1880.; Madison County (Mont.)--1870-1880.; Expeditions & surveys--Montana--Madison County--1870-1880.; Hydraulic Mining--Montana--Madison County--1870-1880.; Mining--Montana--Madison County--1870-1880.;...
    • [between 1870 and 1880?]
    • Hydraulic mining near Virginia City, Montana

    • View of a hydraulic mining operation in Virginia City, Montana; shows wooden sluices, a hose on a reel, rock tailings, a hoist and a section of the sluice or flume, and abandoned headgates.
    • Sluices--Montana--Virginia City--1870-1880.; Virginia City (Mont.)--1870-1880.; Flumes--Montana--Virginia City--1870-1880.; Hydraulic mining--Montana--Virginia City--1870-1880.; Mining--Montana--Virginia City--1870-1880.
    • [between 1872 and 1878]
    • Flume for hydraulic mining near Leadville, Colo.

    • View of a flume, used to supply water for hydraulic mining, on a hillside probably near Leadville, in Lake County, Colorado. The wooden structure has log uprights.
    • Lake County (Colo.)--1880-1900.; Flumes.; Hydraulic mining.
    •  
    • Flume for hydraulic mining near Leadville, Colo.

    • View of a wooden flume used to supply water for hydraulic mining, on a hillside probably near Leadville, in Lake County, Colorado. The structure has log uprights. Shows rock formations.
    • Lake County (Colo.)--1880-1900.; Flumes.; Hydraulic mining.
    •  
    • A closeup of hydraulic mining Alma Placer, Park County, Colo. on the South Fork of the South Platte

    • Gold miners pose under jets of water at a hydraulic mine in Park County, Colorado; bluffs in the background have erosion and waterfalls. A crane dangles a palette from a chain and pulley.
    • Park County (Colo.)--1880-1900.; Hydraulic mining--Colorado--Park County--1880-1900.; Miners--Colorado--Park County--1880-1900.; Mining equipment--Colorado--Park County--1880-1900.; Mining--Colorado--Park County--1880-1900.;...
    • [between 1880 and 1900?]
    • Hydraulic mine near Leadville, Colo.

    • View of an unidentified hydraulic mine near Leadville in Lake County, Colorado. Miners direct monitor nozzles to excavate and wash gravel from the ground. A tipple is in the distance.
    • Lake County (Colo.)--1880-1900.; Hydraulic mining.; Miners.; Tipples.; Nozzles.
    •  
    • Hydraulic mining near Breckenridge, Colorado

    • View of hydraulic gold placer mining, near Breckenridge, Summit County, Colorado; shows pipes, water jets, flumes, buildings, and mountains.
    • Breckenridge (Colo.)--1890-1900.; Buildings--Colorado--Breckenridge--1890-1900.; Flumes--Colorado--Breckenridge--1890-1900.; Hydraulic mining--Colorado--Breckenridge--1890-1900.; Mining--Colorado--Breckenridge--1890-1900.
    • July, 1897
    • Placer mining Alma Colo

    • Gold miners pose at a hydraulic mine in Alma, Park County, Colorado; bluffs in the background have erosion and falling water. A jet of water issues from a "monitor" nozzle; a flume is in the foreground.
    • Alma (Colo.)--1880-1900.; Flumes--Colorado--Park County--1880-1900.; Gold mining--Colorado--Park County--1880-1900.; Hydraulic mining--Colorado--Park County--1880-1900.; Miners--Colorado--Park County--1880-1900.; Mining--Colorado--Park...
    • [between 1880 and 1900?]
    • Sluice box - placer mining in the hills

    • Miners use a sluice box for hydraulic gold placer mining, in South Dakota.
    • Sluices--South Dakota--1880-1890.; Hydraulic mining--South Dakota--1880-1890.; Miners--South Dakota--1880-1890.; Mining equipment--South Dakota--1880-1890.; Mining--South Dakota--1880-1890.
    • 1889
    • P.W.A. mining class, Denver

    • Women operate a hydraulic gold placer mining rocker box, in a Public Works Administration class, in Denver, Colorado. One wears a big hat and pours from a bucket; gold pans are on the ground, and cars are nearby.
    • United States. Public Works Administration.--1930-1940.; Gold mining--Colorado--Denver--1930-1940.; Hydraulic mining--Colorado--Denver--1930-1940.; Mining equipment--Colorado--Denver--1930-1940.; Mining--Colorado--Denver--1930-1940.;...
    • [between 1933 and 1939?]
    • So. Platte Dr. Co. gen. view

    • View of the South Platte Dredging Company hydraulic placer gold mining dredge probably near Fairplay (Park County), Colorado. Tailings piles are nearby.
    • South Platte Dredging Co.--Equipment & supplies--1930-1950.; Fairplay (Colo.)--1930-1950.; Dredges--Colorado--Fairplay--1930-1950.; Hydraulic mining--Colorado--Fairplay--1930-1950.; Mining--Colorado--Fairplay--1930-1950.
    • [between 1930 and 1950?]
    • Gold Run pit

    • Gold Run Mine, a gold placer mine near Breckenridge, Summit County, Colorado; miners operate hydraulic nozzles (monitors) fitted with rock counterbalances, miners with shovels stand inside the wash.
    • Gold Run Mine (Breckenridge, Colo.)--1880-1890.; Breckenridge (Colo.)--1880-1890.; Gold mining--Colorado--Breckenridge--1880-1890.; Hydraulic Mining--Colorado--Breckenridge--1880-1890.; Mining--Colorado--Breckenridge--1880-1890.
    • [between 1880 and 1890?]
    • Dredge at Breckenridge, Colo

    • Royal Tiger Mining Company placer gold dredge in Breckenridge, Summit County, Colorado; lettering on the treatment plant reads: "Tiger Placers Co. Dredge No. 1." The stacker extends over hydraulic mine tailings; buildings and mountains are in the...
    • Gold dredging--Breckenridge--1930-1940.; Mining machinery--Breckenridge--1930-1940.; Breckenridge (Colo.)--1930-1940.; Hydraulic mining--Colorado--Breckenridge--1930-1940.; Mining--Colorado--Breckenridge--1930-1940.
    • [between 1933 and 1935?]
    • Taylor Park Dredge, working on Texas Creek - Gunnison County

    • View of a hydraulic placer bucket-line gold mining dredge on Texas Creek, in Gunnison County, Colorado.
    • Gunnison County (Colo.)--1910-1920.; Texas Creek (Gunnison County, Colo.)--1910-1920.; Dredges--Colorado--Gunnison County--1910-1920.; Gold mining--Colorado--Gunnison County--1910-1920.; Hydraulic mining--Colorado--Gunnison County--1910-1920.;...
    • [between 1910 and 1915]
    • P.W.A. class in mining, Denver

    • View of a Public Works Administration hydraulic gold placer mining class, in Denver, Colorado; shows crowds of people panning in the Platte River, water towers, and cars.
    • United States. Public Works Administration.--1930-1940.; Denver (Colo.)--1930-1940.; Gold mining--Colorado--Denver--1930-1940.; Hydraulic mining--Colorado--Denver--1930-1940.; Miners--Colorado--Denver--1930-1940.;...
    • [between 1930 and 1940?]
    • So. Platte Dr. Co., rollers

    • View of roller mechanism on the South Platte Dredging Company hydraulic placer gold mining dredge near Fairplay (Park County), Colorado.
    • South Platte Dredging Co.--Equipment & supplies--1930-1950.; Mining machinery--Parts--Colorado--Fairplay--1930-1950.; Fairplay (Colo.)--1930-1950.; Dredges--Colorado--Fairplay--1930-1950.; Hydraulic mining--Colorado--Fairplay--1930-1950.;...
    • [between 1930 and 1950?]
    • Gold slide placer Fairplay, Colorado

    • View of a hydraulic gold mine in Fairplay, Park County, Colorado; shows a trommel (a revolving stone filter-screen), tailings, a pond, and corrugated metal sheds.
    • Mining machinery--Colorado--Fairplay--1950-1960.; Fairplay (Colo.)--1950-1960.; Gold mining--Colorado--Fairplay--1950-1960.; Hydraulic mining--Colorado--Fairplay--1950-1960.; Mining--Colorado--Colorado--Fairplay--1950-1960.
    • 1955
    • Tonopah Placer Co dredge on Blue River below Breckenridge Colo

    • View of a Tonopah Placer Company placer gold dredge in Breckenridge, Summit County, Colorado. Men pose by the hydraulic mine operation; a United States flag tops the tern gantry.
    • Gold dredging--Breckenridge--1910-1920.; Mining machinery--Breckenridge--1910-1920.; Blue River (Colo. : River)--1910-1920.; Breckenridge (Colo.)--1910-1920.; Hydraulic mining--Colorado--Breckenridge--1910-1920.;...
    • June 30, 1917
    • View of Gold Run pit

    • A miner uses a hydraulic nozzle (monitor) fitted with a rock counterbalance in the pit of the Gold Run Mine, a gold placer mine near Breckenridge, Summit County, Colorado.
    • Gold Run Mine (Breckenridge, Colo.); Breckenridge (Colo.)--1880-1890.; Gold miners--Colorado--Breckenridge--1880-1890.; Gold mining--Colorado--Breckenridge--1880-1890.; Hydraulic Mining--Colorado--Breckenridge--1880-1890.;...
    • [between 1880 and 1890?]
    • Gold slide placer Fairplay, Colorado

    • View of a hydraulic gold mine in Fairplay, Park County, Colorado; shows a trommel (a revolving stone filter-screen), tailings, and a corrugated metal shed with lettering: "Danger."
    • Mining machinery--Colorado--Fairplay--1950-1960.; Fairplay (Colo.)--1950-1960.; Gold mining--Colorado--Fairplay--1950-1960.; Hydraulic mining--Colorado--Fairplay--1950-1960.; Mining--Colorado--Fairplay--1950-1960.
    • 1955
    • Derry Gold Dredge, near Leadville, Colo. Mt. Massive in background at right

    • Men and women pose on the Derry Dredge, Empire Gold Dredging Company's hydraulic placer bucket-line vessel, near Leadville, Lake County, Colorado. Sign reads: "Derry Dredge - Built by New York Engineering Co."
    • Empire Gold Dredging Company--Equipment & supplies--1910-1930.; Dredges--Colorado--Lake County--1910-1930.; Lake County (Colo.)--1910-1930.; Gold mining--Colorado--Lake County--1910-1930.; Hydraulic mining--Colorado--Lake County--1910-1930.; Mining...
    • between 1915 and 1926
    • Water supply ditch, So. Platte Dr. Co.

    • View of a ditch that leads to the South Platte Dredging Company hydraulic placer gold mining dredge near Fairplay (Parker County). Gravel tailing piles are nearby and mountains are in the distance. Shows part of the dredge.
    • South Platte Dredging Co.--Equipment & supplies--1930-1950.; Fairplay (Colo.)--1930-1950.; Dredges--Colorado--Fairplay--1930-1950.; Hydraulic mining--Colorado--Fairplay--1930-1950.; Mining--Colorado--Fairplay--1930-1950.; Tailings...
    • [between 1930 and 1950?]
    • Gold Run Mine dump

    • Gold Run Mine, a gold placer mine near Breckenridge, Summit County, Colorado; a miner uses a hydraulic nozzle (monitor) fitted with a rock counterbalance; water flows out of a sluice.
    • Gold Run Mine (Breckenridge, Colo.)--1880-1890.; Tailings embankments--Colorado--Breckenridge--1880-1890.; Breckenridge (Colo.)--1880-1890.; Gold miners--Colorado--Breckenridge--1880-1890.; Hydraulic Mining--Colorado--Breckenridge--1880-1890.;...
    • [between 1880 and 1890?]
    • The gold boat, Fairplay, Colorado

    • Hydraulic placer gold mining dredge, Fairplay, Colorado.
    • Dredges--Colorado--Fairplay--1900-1920.; Gold dredging--Colorado--Fairplay--1900-1920.; Fairplay (Colo.)--1900-1920.; Hydraulic mining--Colorado--Fairplay--1900-1920.; Mining--Colorado--Fairplay--1900-1920.
    • [between 1900 and 1920?]
    • Early placer mining Breckenridge Colo

    • 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.
    • Sluices--Colorado--Breckenridge--1880-1890.; Breckenridge (Colo.)--1880-1890.; Flumes--Colorado--Breckenridge--1880-1890.; Gold mining--Colorado--Breckenridge--1880-1890.; Hydraulic mining--Colorado--Breckenridge--1880-1890.;...
    • 1880?
    • Last dredge in Breckenridge was raised and operated for a short time

    • View of a Royal Tiger Mining Company hydraulic placer gold dredge in Breckenridge, Summit County, Colorado; lettering on the treatment plant reads: "Tiger Dredge No. 1." The bucket-line and stacker extend from the half-submerged vessel; houses,...
    • Gold dredging--Colorado--Breckenridge--1930-1940.; Mining machinery--Colorado--Breckenridge--1930-1940.; Tailings embankments--Colorado--Breckenridge--1930-1940.; Breckenridge (Colo.)--1930-1940.; Abandoned...
    • [between 1937 and 1939?]
    • Derry Gold Dredge, Twin Peaks in background, near Leadville, Colo.

    • View of the Derry Dredge, Empire Gold Dredging Company's hydraulic placer bucket-line vessel, near Leadville, Lake County, Colorado. Sign reads: "Derry Dredge - Built by New York Engineering Co."
    • Empire Gold Dredging Company--Equipment & supplies--1910-1920.; Dredges--Colorado--Lake County--1910-1930.; Lake County (Colo.)--1910-1930.; Gold mining--Colorado--Lake County--1910-1930.; Hydraulic mining--Colorado--Lake County--1910-1930.; Mining...
    • between 1915 and 1926

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