View of several workers forming the bottom of a Bessemer converter at an unknown manufacturing plant. The Bessemer converter takes its name from the "Bessemer process," an inexpensive industrial method for the mass-production of steel from molten pig iron. Named for Sir Henry Bessemer (1813-1898), the Bessemer process involves the removal of impurities from molten iron by means of oxidation in order to form steel. This photograph is one of a set of fourteen stereographs detailing the production of iron and steel by various processes.
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“Making a Bottom for a Bessemer Converter, Showing Gas Blast Tubes.” Underwood & Underwood, n.d. Underwood & Underwood Stereographs of Manufacturing Industries. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/j6731377h.
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