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  • All fields: 1938-03-28
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    • Processing plant, 1938

    • Iowa State University; Dept. of Chemical and Biological Engineering
    • At the center of this view from the balcony level is a large chained pulley. Several long pipes with spigots run horizontally above the wooden floor.
    • Research equipment,1938

    • Iowa State University; Dept. of Chemical and Biological Engineering
    • Two cylindrical tanks are connected together by pipes at the top. There is a large drum and motor at the base of this piece of equipment.
    • Research equipment, 1938

    • Iowa State University; Dept. of Chemical and Biological Engineering
    • One large and two smaller wrapped vertical pipes are shown in the foreground. A container, wider at the top than the bottom, sits below the larger pipe. A burlap bag is wrapped around another pipe on the right.

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