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  • All fields: Mining--Colorado--Summit County--1890-1900.
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Display: 50

    • Placer mining American Gulch

    • View of American Gulch in Summit County, Colorado. The gulch eroded from hydraulic gold mine work; a flume and mill house owned by the Wapiti Mining Company are on the steep valley walls. A miner aims a jet of water, which runs through sluices and...
    • Tailings embankments--Colorado--Summit County--1890-1900.; Summit County (Colo.)--1890-1900.; Buildings--Colorado--Summit County--1890-1900.; Flumes--Colorado--Summit County--1890-1900.; Hydraulic mining--Colorado--Summit County--1890-1900.;...
    • [between 1890 and 1900?]
    • Stamp mill interior

    • Interior of a stamp mill in Summit County, Colorado. The machinery includes dies and stamps.
    • Summit County (Colo.)--1890-1900.; Machinery--Colorado--Summit County--1890-1900.; Milling machines--Colorado--Summit County--1890-1900.; Mining--Colorado--Summit County--1890-1900.
    • [between 1890-1900]
    • Tom's Baby, a crystallized gold nugget

    • View of the largest crystallized gold nugget unearthed in Colorado history, it was discovered in 1887 near Breckenridge (Summit County), Colorado, by miners Tom Graves and Harry Lytton. The nugget became known as "Tom's Baby," because Graves would...
    • Summit County (Colo.)--1890-1900.; Gold--Colorado--Summit County--1890-1900.; Mining--Colorado--Summit County--1890-1900.
    • [between 1890 and 1900?]
    • A Summit County gold nugget, weight, 26 ounces

    • View of a gold nugget from mines in Summit County, Colorado.
    • Summit County (Colo.)--1890-1900.; Gold--Colorado--Summit County--1890-1900.; Mining--Colorado--Summit County--1890-1900.
    • 1899
    • The mineral resources of Summit County

    • View of a 156 ounce specimen of crystallized gold, known as "Tom's Baby," taken from the Gold Flake Mine on Farncomb Hill, near Breckenridge, Summit County, Colorado. The specimen was named after Tom Groves, one of the miners who discovered it.
    • Summit County (Colo.)--1890-1900.; Gold--Colorado--Summit County--1890-1900.; Mining--Colorado--Summit County--1890-1900.
    • 1899

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