File:Breaking up from heading in soft ground (Walker 1888).jpg
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DescriptionBreaking up from heading in soft ground (Walker 1888).jpg | Breaking up from heading in soft ground (Severn tunnel construction) | |||||
Date | ||||||
Source |
Original: Thomas A. Walker (1888). The Severn Tunnel. Facing page 82. Scan: Internet Archive: https://archive.org/details/severntunnelits01walkgoog |
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Author | Thomas A. Walker | |||||
Permission (Reusing this file) |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:13, 20 November 2011 | 2,756 × 4,759 (1.03 MB) | Iain Bell (talk | contribs) | {{Information |Description=Breaking up from heading in soft ground (Severn tunnel construction) |Source=''Original:'' Thomas A. Walker (1888). The Severn Tunnel. Facing page 82.<br>''Scan:'' Internet Archive: http://www.archive.org/details/severntunnelits |
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Date and time of data generation | 23:54, 9 August 2009 |
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Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Aperture 3.2.1 |
File change date and time | 23:54, 9 August 2009 |
Date and time of digitizing | 23:54, 9 August 2009 |
Color space | sRGB |