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What is Greathead Shield in Tunnel Construction about?
1) In 1864, Peter Barlow patented a circular cast iron shield method for tunneling, but failed to explain how to fill gaps between the shield and tunnel wall. 2) In 1869, James Henry Greathead was credited with constructing the first actual tunneling shield for what is now the Tower Gateway complex. 3) Work began on the tunnel under the Thames in February 1869 using Greathead
- Author
- arem_pransisko
- Language
- EN