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Subject Flotation reagents Remove constraint Subject: Flotation reagents

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    • 1952

    The extensive collection of Hercules advertising materials, covering the years 1913 through 1952, documents the company's growth as a major manufacturer of chemical products. A portion of the 1952 edition is digitized…

    • 1952

    Advertisement for flotation (also known as frothing) agents, including pine oil and rosin amine, manufactured and sold by the Hercules Powder Company. Formed in 1912 as part of an anti-trust settlement with DuPont, the…