File:PSM V39 D763 Vertical cross section of an open hearth furnace.jpg
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DescriptionPSM V39 D763 Vertical cross section of an open hearth furnace.jpg | Vertical cross section of an open hearth furnace | |||||
Date | ||||||
Source | http://en.wikisource.org /wiki/Page:Popular_Science_Monthly_Volume_39.djvu/763 | |||||
Author | Unknown authorUnknown author | |||||
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Extracted image from book, to greyscale, cropped whitespace. The original can be viewed here: Popular Science Monthly Volume 39.djvu: . Modifications made by Ineuw.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:54, 18 October 2015 | 1,077 × 907 (182 KB) | Ineuw (talk | contribs) | Cleaned image and improved contrast | |
21:55, 27 November 2010 | 1,123 × 923 (264 KB) | Ineuw (talk | contribs) | {{Information |Description = Vertical cross section of an open hearth furnace |Source = http://en.wikisource.org /wiki/Page:Popular_Science_Monthly_Volume_39.djvu/763 |Date = 1891 |Author = Unknown |Permission = {{PD- |
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