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Photographs, Stereographs

Tapping open hearth furnaces and carbonizing molten metal with charcoal or coke

  • After 1895

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Public Domain

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View of two workers tapping open hearth furnaces and carbonizing molten metal at an unknown manufacturing plant. Open hearth furnaces are used to burn excess carbon and other impurities out of pig iron, an intermediate product of smelting iron ore, to produce 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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Extent
  • 7 in. W x 3 in. H
Subject
Rights Public Domain Mark 1.0
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  • Courtesy of Science History Institute

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“Tapping Open Hearth Furnaces and Carbonizing Molten Metal with Charcoal or Coke.” Underwood & Underwood, n.d. Underwood & Underwood Stereographs of Manufacturing Industries. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/g732d8963.

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