Color print advertisement for permissible explosives manufactured by Hercules Powder Company. The advertisement shows four lists of permissibles, separated into categories labelled For Rock Work, For Wet Work, For Coarse Coal, and For Fine Coal. Each category features its own accompanying illustration. This advertisement appeared in Coal Age and Mechanization.
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. “Permissibles That Give You the Most for Your Dynamite Dollar.” 1950 Hercules Advertisements, 1950. Records of Hercules Incorporated, Volume 1950. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/zqnd13n.
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