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  • All fields: Furnaces--Colorado--Denver--1890-1900.
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    • Argo smelting works (Boston and Colorado Smelting Co.)

    • Interior view of an Argo Smelting Works building, owned by the Boston and Colorado Smelting Company, Denver, Colorado, shows a chimney surrounded by gutters emanating from a furnace. One of the furnace doors is open as a man uses a long steel rod...
    • Argo Smelting Company (Denver, Colo.)--1890-1900.; Boston & Colorado Gold and Silver Smelting Company--1890-1900.; Denver (Colo.)--1890-1900.; Furnaces--Colorado--Denver--1890-1900.; Interiors--Colorado--Denver--1890-1900.;...
    • 1892
    • Thomas, Shepard & Searing stress tests

    • View of an I-beam engineering stress test, in Denver, Colorado; shows men, brick, furnaces, and I-beams.
    • Building materials--Testing--Colorado--Denver--1890-1900.; Denver (Colo.)--1890-1900.; Furnaces--Colorado--Denver--1890-1900.; I-beams--Colorado--Denver--1890-1900.; Laborers--Colorado--Denver--1890-1900.; Testing--Colorado--Denver--1890-1900.
    • [between 1890 and 1900?]
    • Argo smelter refinery

    • Interior view of an Argo smelting works building, owned by the Boston and Colorado Smelting Company, Denver, Colorado, shows a stack of crucibles on top of a furnace, a hoist, and a cart.
    • Argo Smelting Company (Denver, Colo.)--1890-1900.; Boston & Colorado Gold and Silver Smelting Company--1890-1900.; Crucibles--Colorado--Denver--1890-1900.; Denver (Colo.)--1890-1900.; Furnaces--Colorado--Denver--1890-1900.;...
    • 1892

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