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Subject Gums and resins Remove constraint Subject: Gums and resins

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    • circa 1960-Jul

    General view of office machine operator Pat Bodie examining a sample of rosin at the Hercules Powder Company plant in Brunswick, Georgia. One of two Hercules plants specializing in naval stores, the Brunswick plant…

    • 1944-Sep

    Print advertisement for Dow Corning silicone insulating varnishes depicts what could be Fiberglas or asbestos cloth, a motor stator, transformer coils and Fiberglas served magnet wire, based on the accompanying…