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  • All fields: Ore industry--Colorado--1910-1930.
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    • Mill and tailings

    • View of a mine ore processing site in (probably) Colorado; elevator sheds and a tipple with ore car tracks top piles of tailings.
    • Mining--Colorado--1910-1930.; Ore industry--Colorado--1910-1930.
    • [between 1910 and 1930?]
    • Mining

    • View of a mine processing mill in (probably) Colorado; shows smokestacks, mill buildings, ore tramways, pine forest, hills, a water tank and bridges.
    • Mills--Colorado--1910-1930.; Mining--Colorado--1910-1930.; Ore industry--Colorado--1910-1930.
    • [between 1910 and 1930?]
    • Mining

    • View of a mine processing site in (probably) Colorado; shows a mill building and trestle ore car tracks.
    • Mining--Colorado--1910-1930.; Ore industry--Colorado--1910-1930.
    • [between 1910 and 1930?]

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