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  • All fields: Placer
(2306 results)



Display: 50

    • Old workings of a pit

    • View of an abandoned gold placer mining pit near Breckenridge, Summit County, Colorado shows: pipes and tailings with valley and mountains in background.
    • Abandoned mines--Colorado--Breckenridge--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?]
    • Old mining works Montgomery Spanish arastra

    • View of an abandoned placer mine operation near Montgomery (Park County), Colorado. Wooden sluices and cabins are nearby.
    • Abandoned mines--Colorado--Montgomery--1870-1880.; Sluices--Colorado--Montgomery--1870-1880.; Montgomery (Colo.)--1870-1880.; Hydraulic mining--Colorado--Montgomery--1870-1880.; Mining--Colorado--Montgomery--1870-1880.
    • [between 1870 and 1880]
    • Old dredge near Fairplay, Colo.

    • Abandoned hydraulic placer gold mining dredge on the frozen South Platte River near Fairplay, Park County, Colorado.
    • Abandoned mines--Colorado--Park County--1920-1930.; Dredges--Colorado--Park County--1920-1930.; Gold dredging--Colorado--Park County--1920-1930.; Park County (Colo.)--1920-1930.; South Platte River (Colo. and Neb.)--1920-1930.; Hydraulic...
    • January 1929
    • An old timer panning gold

    • An elderly man placer mines along the banks of an unidentified stream, Colorado.
    • Aged persons--Colorado--1900-1920.; Hydraulic mining--Colorado--1900-1920.; Mining--Colorado--1900-1920.
    • [between 1900 and 1920?]
    • 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?]
    • Virginia City, Montana

    • View of Virginia City, looking north in (Madison County) Montana. Shows a rocky barren landscape with a gulch, a main street lined with frame buildings, log buildings and fences at the foot of Alder Gulch, a placer mining district.
    • Alder Gulch (Madison County, Mont.)--1870-1880.; Virginia City (Mont.)--1870-1880.; Cities & towns--Montana--Virginia City--1870-1880.; Expeditions & surveys--Montana--Virginia City--1870-1880.; Hydraulic mining--Montana--Virginia City--1870-1880.;...
    • [1871.]
    • Hydraulic Mining

    • View of placer mining operations in probably Alder Gulch (Madison County), Montana. Men spray water at an embankment with monitor nozzles.
    • Alder Gulch (Madison County, Mont.)--1880-1900.; Madison County (Mont.)--1880-1900.; Gold mining--Montana--Madison County--1880-1900.; Hydraulic mining--Montana--Madison County--1880-1900.; Miners--Montana--Madison County--1880-1900.;...
    • [between 1880 and 1900?]
    • Alma, Colo. placer mining

    • Miners work inside a gold placer mine pit with a hydraulic nozzle (monitor) and a crane, Summit County, Colorado.
    • Alma (Colo.)--1880-1890.; Gold mining--Colorado--Alma--1880-1890.; Hydraulic Mining--Colorado--Alma--1880-1890.; Mining--Colorado--Alma--1880-1890.
    • 1885
    • 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?]
    • Placer mining at Alma

    • Gold miners pose with a wheelbarrow 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.
    • Alma (Colo.)--1880-1900.; Gold mining--Colorado--Alma--1880-1900.; Hydraulic mining--Colorado--Alma--1880-1900.; Miners--Colorado--Alma--1880-1900.; Mining--Colorado--Alma--1880-1900.
    • [between 1880 and 1900?]
    • Alma, Colo.

    • View west from above the icy Middle Fork of the South Platte, to the north side of Alma, (10,353 feet) in Park County, Colorado, includes large piles of tailings from placer and hydraulic dredge mining along the river. Town consists of scattered...
    • Alma (Colo.)--1920-1930.; Mining--Colorado--Alma--1920-1930.
    • [1929]
    • Alma, Colo.

    • View southwest from above the icy Middle Fork of the South Platte, to Alma, (10353 feet) Park County, Colorado, includes large piles of tailings from placer and hydraulic dredge mining along river. Town consists of scattered wood frame residences,...
    • Alma (Colo.)--1920-1930.; Mining--Colorado--Alma--1920-1930.
    • [1929]
    • Alma, Park Co.

    • View west of Alma, (10,353 feet) Park County, Colorado, includes large tailing dumps from placer and hydraulic dredge mining above the Middle Fork of the South Platte River; shows frame residences, commercial buildings on main street, and ruins of...
    • Alma (Colo.)--1920-1930.; Mining--Colorado--Alma--1920-1930.
    • [1929]
    • Placer project Alma, Colo.

    • View of the path of a dredge near Alma (Park County), Colorado. The digging arm of a dredge is in the distance.
    • Alma (Colo.)--1940-1950.; Dredging--Colorado--Alma--1940-1950.; Hydraulic mining--Colorado--Alma--1940-1950.; Mining--Colorado--Alma--1940-1950.
    • [1940]
    • Alma Gold Mining Co.

    • Alma Gold Mining Company hydraulic placer dredge, Park County, Colorado shows tailings, settling pond and backhoe with Mosquito Range in background.
    • Alma Gold Mining Company (Colo.)--1930-1940.; Dredges--Colorado--Park County--1930-1940.; Gold dredging--Colorado--Park County--1930-1940.; Park County (Colo.)--1930-1940.; Hydraulic mining--Colorado--Park County--1930-1940.; Mining--Colorado--Park...
    • February 24, 1936
    • Placer mining Alma Placer Park Co, Colo

    • View of the Alma Placer, a hydraulic gold mine in Park County, Colorado; shows eroded embankments, a crane, and miners using monitors to aim jets of water.
    • Alma Placer (Colo.)--1880-1900.; Park County (Colo.); Hoisting machinery--Park County--1880-1900.; Hydraulic mining--Colorado--Park County--1880-1900.; Miners--Park County--1880-1900.; Mining--Colorado--Park County--1880-1900.
    • 1887

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