File:Panama Canal Lock Forms.jpeg
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Panama_Canal_Lock_Forms.jpeg (556 × 369 pixels, file size: 56 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:31, 2 November 2005 | 556 × 369 (56 KB) | commons>Johantheghost | The Panama Canal locks under construction in 1910. In the foreground are shown the huge, collapsible steel forms used to mould the culverts into the side walls; behind can be seen the towering wall forms, mounted on rails |
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