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  • All fields: Mining--Colorado--1880-1910.
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    • Colorado mining

    • Colorado mining

    • View of unidentified mines on a hillside, Colorado, shows railroad tracks, a mill, tailings, and houses.

    • Mills--Colorado--1880-1910.; Mining--Colorado--1880-1910.

    • [between 1880 and 1910?]
    • Unidentified coal town

    • Unidentified coal town

    • Aerial view of an unidentified mining town possibly in Las Animas County, Colorado. Shows a large town with substantial brick and frame buildings including a church. Smoke rises from the smoke stacks of mine processing buildings. Frame houses sit...

    • Cities & towns--Colorado--1880-1910.; Mining--Colorado--1880-1910.

    • [between 1880 and 1910?]
    • Breast of tunnel

    • Breast of tunnel

    • Miners stand with an electric drill, pickax, and chisolm shovel, in a narrow tunnel of an unidentified mine in probably Colorado.

    • Drills (Equipment)--Colorado--1880-1910.; Miners--Colorado--1880-1910.; Mining--Colorado--1880-1910.

    • [between 1880 and 1910?]
    • Hard rock miners

    • Hard rock miners

    • A group of miners pose outside a mine entrance possibly in Las Animas County, Colorado. The men wear work pants, jackets and hats. Several men hold candles that are mounted on metal rods. Some of the miners may be Hispanic or Italian.

    • Miners--Colorado--1880-1910.; Mining--Colorado--1880-1910.

    • [between 1880 and 1910?]
    • Assayers

    • Assayers

    • Assayers examine a piece of ore on a table with a magnifying glasses.

    • Assayers--Colorado--1880-1910.; Hand lenses--Colorado--1880-1910.; Mining--Colorado--1880-1910.; Ore industry--Colorado--1880-1910.

    • [between 1880 and 1910]
    • Placer mining near Rich.

    • Placer mining near Rich.

    • View of a placer mining site near possibly Richfield (Conejos County), Colorado; men look at a boom with pulleys and a excavated pit. A cat is by a frame shack.

    • Hoisting machinery--Colorado--1880-1910.; Hydraulic mining--Colorado--1880-1910.

    • [between 1880 and 1910?]

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