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Subject Iron industry and trade Remove constraint Subject: Iron industry and trade Subject Employees Remove constraint Subject: Employees

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    • after 1895

    View of a worker drilling bolt holes into finished steel rails at an unknown manufacturing plant. This photograph is one of a set of seven stereographs detailing the production of steel.

    • after 1895

    View of several workers removing a steel plate from a cutting machine at an unknown manufacturing plant. This photograph is one of a set of seven stereographs detailing the production of steel.

    • after 1895

    View of two workers using a rolling mill to compress and lengthen billet blooms, a semi-finished steel product often transformed into finished products like rails or wire rods, at an unknown manufacturing plant. This…

    • after 1895

    View of a worker using an electric machine to draw billet, a semi-finished steel product often transformed into finished products like wire rod, from a re-heating furnace at an unknown manufacturing plant. This…

    • after 1895

    View of a worker inserting a steel ingot, a piece of relatively pure material cast into a shape suitable for further processing, into a rolling mill at an unknown manufacturing plant. During the production of steel,…

    • after 1895

    View of a line of furnaces in an open hearth mill at an unknown manufacturing plant. During the conversion of iron into steel, raw materials such as molten iron are "charged" or deposited into the interior of a furnace,…

    • after 1895

    View of several workers forming the bottom of a Bessemer converter at an unknown manufacturing plant. The Bessemer converter takes its name from the "Bessemer process," an inexpensive industrial method for the…

    • after 1895

    View of a worker cooling pig iron, an intermediate product of smelting iron ore produced from a blast furnace, at an unknown manufacturing plant. At this stage of production, the pig iron has been placed in sand molds…

    • after 1895

    View of two workers constructing sand molds for pig iron, an intermediate product of smelting iron ore produced from a blast furnace, at an unknown manufacturing plant. Used to form pig iron ingots, such molds are…

    • after 1895

    View of two workers drawing off molten iron from a blast furnace to make pig iron, an intermediate product of smelting iron ore, at an unknown manufacturing plant. This photograph is one of a set of fourteen…

    • after 1895

    Detail view of blast furnaces and feed buckets at an unknown manufacturing plant, with a worker visible on the bottom left-hand side of the photograph. Used to chemically reduce and physically convert iron oxides into…