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 Isambart Brunel in 1818 1842 Woodcut

- Image ID: TXGTG8
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 Isambart Brunel in 1818 1842 Woodcut Stock Photo
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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 Isambart Brunel in 1818 1842 Woodcut
Photo 12 / Alamy Stock Photo
Image ID: TXGTG8