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    • Platoro mining district

    • Men stand by rock outcroppings and mineral deposits in the Platoro District, (Conejos) County, Colorado; one man holds a cloth bag of (probably) geological samples.
    • Platoro (Colo.)--1900-1920.; Miners--Colorado--Platoro--1900-1920.; Mining--Colorado--Platoro--1900-1920.; Rock formations--Colorado--Platoro--1900-1920.
    • [between 1900 and 1920?]

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