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  • All fields: Mining--Colorado--Vanadium--1910-1920.
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    • Primos Chem. Co. mill, Vanadium, Colo.

    • Primos Chem. Co. mill, Vanadium, Colo.

    • View of the Primos Chemical Company mill and Rio Grande Southern Railroad tracks beside the San Miguel River in Vanadium (San Miguel County), Colorado. Shows frame buildings and brick or metal smokestacks in a valley. Denver & Rio Grande freight...

    • Denver and Rio Grande Railroad Company--1910-1920.; Primos Chemical Company--Buildings--1910-1920.; Vanadium industry--Colorado--Vanadium--1910-1920.; San Miguel River (Colo.)--1910-1920.; Vanadium (Colo.)--1910-1920.;...

    • [between 1914 and 1920?]
    • Primos Chem. Co. mill Vanadium, Colo.

    • Primos Chem. Co. mill Vanadium, Colo.

    • View of the Primos Chemical Company vanadium mill complex in Vanadium (San Miguel County), Colorado shows: smokestacks, dump truck, railroad tracks and cars "D. & R. G.", and the San Miguel River.

    • Denver and Rio Grande Railroad Company--1910-1920.; Primos Chemical Company--Buildings--1910-1920.; Vanadium industry--Colorado--Vanadium--1910-1920.; San Miguel River (Colo.)--1910-1920.; Vanadium (Colo.)--1910-1920.;...

    • [between 1914 and 1917?]

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