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Processing of gunpowder and section of the apparatus used. Etching by Bénard after L.J. Goussier.
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https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13985526

Processing of gunpowder and section of the apparatus used. Etching by Bénard after L.J. Goussier.

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Processing of gunpowder and section of the apparatus used. Etching by Bénard after L.J. Goussier.

Original public domain image from Wellcome Collection

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