File:AmCyc Tunnel - arch built.jpg
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Size of this preview: 711 × 600 pixels. Other resolutions: 285 × 240 pixels | 569 × 480 pixels | 933 × 787 pixels.
Original file (933 × 787 pixels, file size: 262 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:42, 4 January 2013 | 933 × 787 (262 KB) | Bob Burkhardt | {{Information |Description={{en|Cross section of a railroad tunnel, viewed head on, designed with an arch. The diagram is divided vertically in half. The left half shows the tunnel with the track installed; the right half with the arch facing installe... |
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