General view of female employees testing electric detonators manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules Powder Company (later Hercules Inc.) specialized in the manufacture of explosives and smokeless powders. The company's Port Ewen plant produced a range of special detonators designed for military use, as well as construction jobs that required blasts of dynamite, such as the clearing of quarries, mines, and tunnels.
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Hercules Incorporated. “Testing Electric Detonators at Hercules Port Ewen Plant,” 1962. Photographs from the Records & Ephemera of Hercules Incorporated, Box 2, Folder 38. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/1z40kt36n.
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