General view of employees at work in the sand foundry at the Dow Chemical Company plant in Bay City, Michigan. Sand casting (or sand molded casting) is a metal casting process wherein sand is used as the mold material for assorted foundry cores and molds.
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Dow Chemical Company. “Sand Foundry at Dow Chemical Company Plant,” 1952. Dow Chemical Company Historical Image Collection, Box Oversized Plants 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/xw42n841k.
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