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  • All fields: sediments
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    • P. W. A. [sic] mining class - Denver

    • View shows W. P. A. students learning the art of placer mining by using a rocker on the banks of an unidentified stream, Denver, Colorado. A rocker consists of a screen box on top draining to a larger box below which is inlaid with riffles to catch...
    •  
    • [1930]
    • History of Denver

    • Comprehenisve study of the history of the Denver area before, during, and after the founding of the city.
    • Smiley, Jerome C. (Jerome Constant), 1858-1924.
    • 1901

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