File:EB1911 Iron and Steel - Fig. 12.—Diagram of the Carnegie Blast-Furnace Plant at Duquesne, Pa.jpg

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Diagram of the Carnegie Blast-Furnace Plant at Duquesne, Pa.

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Description
English: Diagram of the Carnegie Blast-Furnace Plant at Duquesne, Pa.
Date
Source 1911 Encyclopædia Britannica volume 14, "Iron and Steel" article, pages 812 ff.; modified from https://www.gutenberg.org/files/39775/39775-h/39775-h.htm#ar19
Author AnonymousUnknown author

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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:EB1911_Iron_and_Steel_-_Fig._12.%E2%80%94Diagram_of_the_Carnegie_Blast-Furnace_Plant_at_Duquesne,_Pa.jpg

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