File:EB1911 Iron and Steel - Fig. 7.—Section of Duquesne Blast Furnace.jpg
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current | 06:12, 12 May 2020 | 526 × 1,340 (370 KB) | DivermanAU | Uploaded a work by Anonymous from 1911 Encyclopædia Britannica volume 14, "Iron an Steel" article, pages 804 ff.; modified from https://www.gutenberg.org/files/39775/39775-h/39775-h.htm#ar19 with UploadWizard |
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