Advertisement for Yarmor F, a naval stores product manufactured and sold by the Hercules Powder Company for use as a frother. This advertisement appeared in the May 1945 issue of Engineering & Mining Journal.
Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules Powder Company (later Hercules Inc.) initially specialized in the manufacture of explosives and smokeless powders and subsequently diversified its business to encompass a variety of industrial products, including pine and paper chemicals, synthetics, pigments, polymers, and cellulose.
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Hercules Incorporated. “Bubbles to Order for Ore Flotation.” 1945 Hercules Advertisements, 1945. Records of Hercules Incorporated, Volume 1945. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/c247dt29w.
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