National Crushed Stone Association (1956)
- 1956-Feb-20 – 1956-Feb-22
Series of photographs depicting different panels of the Hercules Powder Company display at the 1956 National Crushed Stone Association trade show held at the Conrad Hilton Hotel in Chicago.
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. “National Crushed Stone Association (1956),” 1956. Photographs from the Records & Ephemera of Hercules Incorporated, Box 26, Folder 5-8. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/utzspny.
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