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Subject Control boards (Electrical engineering) Remove constraint Subject: Control boards (Electrical engineering)

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    • circa 1961-Jan

    General view of an unidentified employee operating a control panel at the Hercules Powder Company plant in Parlin, New Jersey. Per notations accompanying the photograph, this control panel was used for various plant…

    • circa 1959

    General view of employee Alfred Buckowski working at a control board used to manage the continuous nitration operation at the Hercules Powder Company plant in Parlin, New Jersey. The nitration process has many…

    • 1950s

    Interior view of a section of the South Side Power House at a Dow Chemical Company plant in Midland, Michigan, showing a control panel and two unidentified employees.