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  • Derry gold dredge, Box creek, Leadville
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    Hydraulic placer gold mining dredge on Box Creek, near Leadville, Lake County, Colorado, sign reads: "Derry Dredge Built by New York Ent[erprises]. Shows several men on dredge owned by Empire Gold Dredging Company.
  • 
    Empire Gold Dredging Company--Equipment & supplies--1920-1930.; Dredges--Colorado--Lake County--1920-1930.; Gold dredging--Colorado--Lake County--1920-1930.; Box Creek (Lake County, Colo.)--1920-1930.; Lake County (Colo.)--1920-1930.; Hydraulic...
  • 
    1920
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  • Timberline Dredging operation Alma, Colo.
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    View of a crane and the Timberline Dredge on the South Platte River near Alma (Park County), Colorado. The covered digging arm extends out over the water. A sign on the dredge reads: "Timberline Dredging Co. Dredge No 2 [...]".
  • 
    Dredges--Colorado--Alma--1940-1950.; Mining machinery--Colorado--Alma--1940-1950.; Alma (Colo.)--1940-1950.; Hoisting machinery--Colorado--Alma--1940-1950.; Hydraulic mining--Colorado--Alma--1940-1950.; Mining--Colorado--Alma--1940-1950.
  • 
    [1940]
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  • Gold mining dredge, Cripple Creek Alaska
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    Hydraulic placer gold mining dredge, known as Dredge #10. Built by the Fairbanks Exploration Company (a subsidiary of the U.S. Smelting, Refining & Mining Co.) in 1940.
  • 
    Dredges--Alaska--Fairbanks North Star Borough--1950-1960.; Gold dredging--Alaska--Fairbanks North Star Borough--1950-1960.; Fairbanks North Star Borough (Alaska)--1950-1960.; Hydraulic mining--Alaska--Fairbanks North Star Borough--1950-1960.;...
  • 
    June 22, 1950
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  • Old dredge near Fairplay, Colo.
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    Abandoned hydraulic placer gold mining dredge on the frozen South Platte River near Fairplay, Park County, Colorado.
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    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
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  • Mine dredge for gold
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    Hydraulic placer gold mining dredge in pond with mine tailings, Dillon, Summit County, Colorado.
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    Dredges--Colorado--Dillon--1920-1930.; Gold dredging--Colorado--Dillon--1920-1930.; Tailings embankments--Colorado--Dillon--1920-1930.; Dillon (Colo.)--1920-1930.; Hydraulic mining--Colorado--Dillon--1920-1930.; Mining--Colorado--Dillon--1920-1930.
  • 
    July 29, 1924
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  • Dredge at Breckenridge, Colo
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    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?]
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  • 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?]
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  • Breckenridge, Colo Reliance Gold Dredge
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    View of a Reliance Gold Dredging Company Bucyrus-built hydraulic placer gold bucket-line dredge in Swan River, French Gulch, Summit County, Colorado. Colorado School of Mines students and miners pose on the vessel.
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    Reliance Gold Dredging Company--1900-1910.; Dredges--Colorado--Summit County--1900-1910.; Mining machinery--Colorado--Summit County--1900-1910.; French Gulch (Summit County, Colo.)--1900-1910.; Summit County (Colo.)--1900-1910.; Swan River...
  • 
    1906?
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  • 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
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  • 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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  • Water supply ditch, So. Platte Dr. Co.
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    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?]
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  • So. Platte Drg. Co.
  • 
    View of the South Platte Dredging Company hydraulic placer gold mining dredge probably near Fairplay (Park County), Colorado. Shows dredge equipment, tailing piles, and hose.
  • 
    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?]
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  • Placer project Alma, Colo.
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    View of the path of a dredge near Alma (Park County), Colorado. The digging arm of a dredge is in the distance.
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    Alma (Colo.)--1940-1950.; Dredging--Colorado--Alma--1940-1950.; Hydraulic mining--Colorado--Alma--1940-1950.; Mining--Colorado--Alma--1940-1950.
  • 
    [1940]
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  • Scenery on North Clear Creek, showing the mines at work washing out gold.
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    Shows an open framework side-wheel hydraulic placer gold dredge; gold miners feed gravel into a sluice next to the dredge, Clear Creek County, Colorado.
  • 
    Dredges--Colorado--Clear Creek County--1870-1880.; Gold dredging--Colorado--Clear Creek County--1870-1880.; Clear Creek County (Colo.)--1870-1880.; Hydraulic mining--Colorado--Clear Creek County--1870-1880.; Mining--Colorado--Clear Creek...
  • 
    [between 1870-1880?]
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  • Gold dredging
  • 
    Hydraulic placer gold mining dredge, possibly in Summit County, Colorado. Shows conveyor buckets on front of dredge used to dig gravel.
  • 
    Dredges--Colorado--1900-1910.; Gold dredging--Colorado--1900-1910.; Conveying systems--Colorado--1900-1910.; Hydraulic mining--Colorado--1900-1910.; Mining--Colorado--1900-1910.
  • 
    [1900?]
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  • Construction of 14th St. viaduct, Denver, Col
  • 
    View of 14th (Fourteenth) Street viaduct construction in Denver, Colorado; shows a hydraulic dredge, a Colorado Midland railroad flatcar, the South Platte River, and signs: "Urie Dredge Denver Grading Co."
  • 
    Denver (Colo.)--1860-1870.; South Platte River (Colo. and Neb.)--1860-1870.; Bridge construction--Colorado--Denver--1860-1870.; Dredges--Colorado--Denver--1860-1870.; Dredging--Colorado--Denver--1860-1870.; Rivers--Colorado--Denver--1860-1870.
  • 
    [1868?]
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  • Abbeyville Dredge, Gunnison County, Colo.
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    View of the remains of the Abbeyville Dredge used for mining near Tincup, Gunnison County, Colo.
  • 
    Gold dredging--Colorado--Gunnison County--2000-2010.; Gunnison County (Colo.)--2000-2010.; Gold dredging--Colorado--Gunnison County--Pictorial works.; Gunnison County (Colo.)--Pictorial works.
  • 
    2007
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  • Derry gold dredge by Twin Peaks
  • 
    Workmen stand on and near the Derry Dredge, Empire Gold Dredging Company's hydraulic placer bucket-line vessel, near Leadville (Lake County), Colorado.
  • 
    Empire Gold Dredging Company--Equipment & supplies--1910-1930.; Lake County (Colo.)--1910-1930.; Dredges--American--Colorado--Lake County--1910-1930.; Gold mining--Colorado--Lake County--1910-1930.; Hydraulic mining--Colorado--Lake...
  • 
    [between 1915 and 1926]
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  • Mining dredge
  • 
    A man stands near the Derry Dredge, Empire Gold Dredging Company's hydraulic placer bucket-line vessel, near Leadville (Lake County), Colorado.
  • 
    Lake County (Colo.)--1910-1930.; Dredges--American--Colorado--Lake County--1910-1930.; Gold mining--Colorado--Lake County--1910-1930.; Hydraulic mining--Colorado--Lake County--1910-1930.
  • 
    [between 1915 and 1926]
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  • Cooley Bros. dredge, gen. view dragline
  • 
    View of a dragline crane and bucket at a hydraulic mining site on probably Beaver Creek in Park County, Colorado. Shows parked automobile, gabled buildings, dredge facilities, wooden sheds and water.
  • 
    Park County (Colo.)--1930-1950.; Gold dredging--Colorado--Park County--1930-1950.; Hoisting machinery--Colorado--Park County--1930-1950.; Hydraulic mining--Colorado--Park County--1930-1950.
  • 
    [between 1935 and 1945?]
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  • Cooley Bros. Dredge, Gen. view
  • 
    View of a dragline crane, a dredge, gabled buildings and mountains on probably Beaver Creek in Park County, Colorado.
  • 
    Park County (Colo.)--1930-1950.; Dredges--Colorado--Park County--1930-1950.; Gold dredging--Colorado--Park County--1930-1950.; Hoisting machinery--Colorado--Park County--1930-1950.; Hydraulic mining--Colorado--Park County--1930-1950.
  • 
    [between 1935 and 1950?]
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  • Cooley Bros. Dredge, Gen. view
  • 
    View of a dragline crane, a dredge and a shovel, possibly on Beaver Creek in Park County, Colorado. The crane reads: "Cooley Brothers" and "Bucyrus Monighan."
  • 
    Park County (Colo.)--1930-1950.; Dredges--Colorado--Park County--1930-1950.; Gold dredging--Colorado--Park County--1930-1950.; Hoisting machinery--Colorado--Park County--1930-1950.; Hydraulic mining--Colorado--Park County--1930-1950.
  • 
    [between 1935 and 1945?]
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  • Dredge
  • 
    View of an operational dredge at a placer mine in Colorado.
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    Gold dredging--Colorado--1920-1930.; Hydraulic mining--Colorado--1920-1930.
  • 
    [between 1920 and 1925?]
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  • Dredge
  • 
    View of an operational dredge at a placer mine in Colorado. Houses and utility buildings are nearby.
  • 
    Gold dredging--Colorado--1920-1930.; Hydraulic mining--Colorado--1920-1930.
  • 
    [between 1920 and 1925?]
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  • Old gold dredge near Tiger, Colo.
  • 
    View of an abandoned gold dredge on probably the Swan River near Tiger (Summit County), Colorado. Tailings piles are nearby.
  • 
    Dredges--Colorado--Tiger--1940-1950.; Mining machinery--Colorado--Tiger--1940-1950.; Tiger (Colo.)--1940-1950.; Hydraulic mining--Colorado--Tiger--1940-1950.; Mining--Colorado--Tiger--1940-1950.
  • 
    1940
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  • South Platte Dredge Fairplay, Colo.
  • 
    View of the South Platte Dredge near Fairplay (Park County), Colorado. Tailings piles are nearby.
  • 
    Dredges--Colorado--Fairplay--1940-1950.; Mining machinery--Colorado--Fairplay--1940-1950.; Fairplay (Colo.--1940-1950.; Hydraulic mining--Colorado--Fairplay--1940-1950.; Mining--Colorado--Fairplay--1940-1950.
  • 
    [1940]
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  • Timberline Dredge Alma, Colo.
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    View of the Timberline Dredge on the South Platte River near Alma (Park County), Colorado. The covered digging arm extends out over the water.
  • 
    Dredges--Colorado--Alma--1940-1950.; Mining machinery--Colorado--Alma--1940-1950.; Alma (Colo.)--1940-1950.; South Platte River (Colo. and Neb.)--1940-1950.; Hydraulic mining--Colorado--Alma--1940-1950.; Mining--Colorado--Alma--1940-1950.
  • 
    [1940]
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  • Gold dredge
  • 
    Two men stand on a gold dredge, probably near Craig, Colorado; slag in foreground.
  • 
    Craig (Colo.)--1910-1920.; Gold mining--Colorado--Craig--1910-1920.
  • 
    [between 1911 and 1920]
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  • Dredge at Hahns Peak placers
  • 
    "Eleanor", a hydraulic placer gold mining dredge in Hahns Peak, Routt County, Colorado.
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    Dredges--Colorado--Hahns Peak--1910-1920.; Gold dredging--Colorado--Hahns Peak--1910-1920.; Hahns Peak (Colo.)--1910-1920.; Hydraulic mining--Colorado--Hahns Peak--1910-1920.; Mining--Colorado--Hahns Peak--1910-1920.
  • 
    1910
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  • No. 6 Canadian Klondike Mining Co. dredge
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    A group of men pose next to a Klondike Mining Company hydraulic placer gold dredge, Alaska.
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    Canadian Klondike Mining Company--1900-1910.; Dredges--Alaska--1900-1910.; Gold dredging--Alaska--1900-1910.; Alaska--1900-1910.; Hydraulic mining--Alaska--1900-1910.; Mining--Alaska--1900-1910.
  • 
    November 7, 1909
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  • Dredge
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    Two well-dressed women and a man stand next to a hydraulic placer gold mining dredge, possibly in Clear Creek or Jefferson County, Colorado.
  • 
    Dredges--Colorado--1870-1890.; Gold mining--Colorado--1870-1890.; Hydraulic mining--Colorado--1870-1890.; Mining--Colorado--1870-1890.
  • 
    [between 1870 and 1890?]
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  • Gold dredge near Golden, Colorado
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    Two well-dressed women and a man stand on the shore of a pond, west of what is now McIntyre Street, overlooking a hydraulic placer gold mining dredge southeast of North Table Mountain in Jefferson County, Colorado.
  • 
    Dredges--Colorado--Jefferson County--1870-1890.; Jefferson County (Colo.)--1870-1890.; North Table Mountain (Colo.)--1870-1890.; Gold mining--Colorado--Jefferson County--1870-1890.; Hydraulic mining--Colorado--Jefferson County--1870-1890.;...
  • 
    [between 1870 and 1890?]
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  • Fairplay, Colorado dredge
  • 
    Distant view of a hydraulic placer gold mining dredge, Fairplay, Park County, Colorado with Mosquito Range in background.
  • 
    Dredges--Colorado--Fairplay--1950-1960.; Gold dredging--Colorado--Fairplay--1950-1960.; Fairplay (Colo.)--1950-1960.; Hydraulic mining--Colorado--Fairplay--1950-1960.; Mining--Colorado--Fairplay--1950-1960.
  • 
    September 1953
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  • Fairplay, Colorado dredge
  • 
    Distant view of a gold mining dredge and tailings, Fairplay, Park County, Colorado with Mosquito Range in background.
  • 
    Dredges--Colorado--Fairplay--1950-1960.; Gold dredging--Colorado--Fairplay--1950-1960.; Fairplay (Colo.)--1950-1960.; Hydraulic mining--Colorado--Fairplay--1950-1960.; Mining--Colorado--Fairplay--1950-1960.
  • 
    September 1953
• • 
    
    
  • Gold dredge, Fairplay
  • 
    Hydraulic placer gold mining dredge, Fairplay, Park County, Colorado.
  • 
    Dredges--Colorado--Fairplay--1940-1950.; Gold dredging--Colorado--Fairplay--1940-1950.; Fairplay (Colo.)--1940-1950.; Hydraulic mining--Colorado--Fairplay--1940-1950.; Mining--Colorado--Fairplay--1940-1950.
  • 
    1942
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  • Gold dredge, Fairplay
  • 
    A conveyor belt moves buckets of rocks on a hydraulic placer gold mining dredge, Fairplay, Park County, Colorado.
  • 
    Dredges--Colorado--Fairplay--1940-1950.; Gold dredging--Colorado--Fairplay--1940-1950.; Fairplay (Colo.)--1940-1950.; Conveying systems--Colorado--Fairplay--1940-1950.; Hydraulic mining--Colorado--Fairplay--1940-1950.;...
  • 
    1942
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  • South Platte dredge, Fairplay, Colo.
  • 
    Hydraulic placer gold mining dredge on the South Platte River, Fairplay, Park County, Colorado.
  • 
    Dredges--Colorado--Fairplay--1930-1940.; Gold dredging--Colorado--Fairplay--1930-1940.; Fairplay (Colo.)--1930-1940.; Hydraulic mining--Colorado--Fairplay--1930-1940.; Mining--Colorado--Fairplay--1930-1940.
  • 
    [1930?]
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  • The dredge, Fairplay, Colo.
  • 
    Hydraulic placer gold mining dredge with shed and equipment, Fairplay, Park County, Colorado.
  • 
    Dredges--Colorado--Fairplay--1930-1940.; Fairplay (Colo.)--1930-1940.; Hydraulic mining--Colorado--Fairplay--1930-1940.; Mining--Colorado--Fairplay--1930-1940.
  • 
    [1930?]
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  • The dredge, Fairplay, Colo.
  • 
    Hydraulic placer gold mining dredge, Fairplay, Park County, Colorado.
  • 
    Dredges--Colorado--Fairplay--1930-1940.; Gold dredging--Colorado--Fairplay--1930-1940.; Fairplay (Colo.)--1930-1940.; Hydraulic mining--Colorado--Fairplay--1930-1940.; Mining--Colorado--Fairplay--1930-1940.
  • 
    [1930?]
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  • The dredge
  • 
    Three men scull a dingy away from a hydraulic placer gold mining dredge, possibly in Park County, Colorado.
  • 
    Dredges--Colorado--1930-1940.; Gold dredging--Colorado--1930-1940.; Hydraulic mining--Colorado--1930-1940.; Mining--Colorado--1930-1940.
  • 
    [1930?]
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  • Testing gravel before building dredge
  • 
    Three men stand on a raft with a churn drill used to test gravel for hydraulic placer gold mining prior to building a dredge, Summit County, Colorado.
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    Summit County (Colo.)--1900-1910.; Drilling & boring machinery--Colorado--Summit County--1900-1910.; Gold mining--Colorado--Summit County--1900-1910.; Hydraulic mining--Colorado--Summit County--1900-1910.; Mining--Colorado--Summit County--1900-1910.
  • 
    [1900?]
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  • 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
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  • Dredge, Summit County
  • 
    Ridson Company's Couch Dredge, in Breckenridge, Summit County, Colorado. The hydraulic placer gold mining vessel is under construction; miners pose by the furnace, trommel, and bucket-line.
  • 
    Gold dredging--Colorado--Breckenridge--1890-1900.; Mining machinery--Colorado--Breckenridge--1890-1900.; Breckenridge (Colo.)--1890-1900.; Hydraulic mining--Colorado--Breckenridge--1890-1900.; Miners--Colorado--Breckenridge--1890-1900.;...
  • 
    1897 or 1898?
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  • Old dredge, at mouth of Swan River
  • 
    View of a placer dredge at Valdora, Summit County, Colorado, in the Swan River. Gold miners pose on the Bucyrus-built hydraulic mine boat and processing plant.
  • 
    Dredges--Colorado--Valdora--1900-1910.; Mining machinery--Colorado--Valdora--1900-1910.; Valdora (Colo.)--1900-1910.; Hydraulic mining--Colorado--Valdora--1900-1910.; Miners--Colorado--Valdora--1900-1910.; Mining--Colorado--Valdora--1900-1910.
  • 
    1905?
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  • Dredge coming up the Blue
  • 
    View of a Tonopah Placer Company bucket-line hydraulic gold dredge in the Blue River, at Breckenridge, Summit County, Colorado. "Two-Mile Bridge" is to one side; placer mine tailings are against hills, men and a parked car are in the foreground.
  • 
    Tonopah Placer Company--1910-1920.; Dredges--Colorado--Breckenridge--1910-1920.; Mining Machinery--Colorado--Breckenridge--1910-1920.; Tailings embankments--Colorado--Breckenridge--1910-1920.; Blue River (Colo. : River)--1910-1920.; Breckenridge...
  • 
    July 28, 1918
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  • Gold dredge in Summit County, Colorado
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    View of a Blue River Placer Mining Company hydraulic placer bucket-line dredge, in the Blue River, Summit County, Colorado. The gold mining vessel and processing plant has a covered stacker extending over tailing piles; mountains are in the...
  • 
    Blue River Placer Mining Company--1920-1930.; Dredges--Colorado--Summit County--1920-1930.; Mining machinery--Colorado--Summit County--1920-1930.; Tailings embankments--Colorado--Summit County--1920-1930.; Blue River (Colo. : River)--1920-1930.;...
  • 
    [between 1920 and 1925?]
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  • Reiling Dredge
  • 
    View of the French Gulch Dredging Company's Reiling Dredge, in Breckenridge, Summit County, Colorado. The Bucyrus-built hydraulic placer gold mine and processing boat has a continuous bucket-line and a covered stacker. A miner is on the gantry.
  • 
    Dredges--Colorado--Breckenridge--1920-1930.; Mining machinery--Colorado--Breckenridge--1920-1930.; Breckenridge (Colo.)--1920-1930.; Gold mining--Colorado--Breckenridge--1920-1930.; Hydraulic mining--Colorado--Breckenridge--1920-1930.;...
  • 
    1920
• • 
    
    
  • French Gulch dredge
  • 
    Hydraulic placer gold mining dredge remains in French Gulch, Breckenridge, Summit County, Colorado, consist of the hull and gantry; tailing piles edge the water.
  • 
    Tailings embankments--Colorado--Breckenridge--1980-1990.; Breckenridge (Colo.)--1980-1990.; French Gulch (Summit County, Colo.)--1980-1990.; Gold mining--Colorado--Breckenridge--1980-1990.; Hydraulic mining--Colorado--Breckenridge--1980-1990.;...
  • 
    1981
• • 
    
    
  • French Gulch dredge
  • 
    Hydraulic placer gold mining dredge remains in French Gulch, Breckenridge, Summit County, Colorado, consist of the hull, gantry, deck house, and pipe sections; tailing piles edge the water.
  • 
    Tailings embankments--Colorado--Breckenridge--1980-1990.; Breckenridge (Colo.)--1980-1990.; French Gulch (Summit County, Colo.)--1980-1990.; Gold mining--Colorado--Breckenridge--1980-1990.; Hydraulic mining--Colorado--Breckenridge--1980-1990.;...
  • 
    1981
• • 
    
    
  • French Gulch dredge
  • 
    Hydraulic placer gold mining dredge remains in French Gulch, Breckenridge, Summit County, Colorado, consist of the hull, gantry, and deck house; tailing piles edge the water.
  • 
    Tailings embankments--Colorado--Breckenridge--1980-1990.; Breckenridge (Colo.)--1980-1990.; French Gulch (Summit County, Colo.)--1980-1990.; Gold mining--Colorado--Breckenridge--1980-1990.; Hydraulic mining--Colorado--Breckenridge--1980-1990.;...
  • 
    1981

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