Shield used during digging of Thames Tunnel (1825-1843) which allowed 12 men to excavate simultaneously. Patent for this first tunnelling shield taken

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Shield used during digging of Thames Tunnel (1825-1843) which allowed 12 men to excavate simultaneously. Patent for this first tunnelling shield taken out by Marc Isambard Brunel in 1818. Woodcut, 1842

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Size: 3954px × 4500px
Photo credit: © Universal History Archive/UIG/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 12, 1818, 1825-1843, 1842, allowed, britain, brunel, civil, construction, digging, engineering, excavate, invention, isambard, marc, men, patent, shield, simultaneously, thames, tunnel, tunnelling, woodcut