Construction & Infrastructure
Greathead shield
The Greathead shield protected workers at the tunnel face while allowing a circular lining to be installed behind it. Its development helped make deep-level urban railway tunnelling more practical.
About this artifact
The Greathead shield protected workers at the tunnel face while allowing a circular lining to be installed behind it. Its development helped make deep-level urban railway tunnelling more practical.
Sources & image credits
Documented physical example or historical image. See the original image record for its subject, date and any reconstruction details.
Image: W&C Shield work.jpg
Creator: The Engineer, July 26, 1895. James C. Cole (died March 1901)
License: Public domain
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