Tunnel shields and the use of compressed air in subaqueous works, by William Charles Copperthwaite ... With 260 illustrations and diagrams.
|Main Author:||Copperthwaite, W. C.|
New York, Van Nostrand Co., 1906.
Greathead, James Henry,
Appendix: A. A chronological list of events connected with tunnelling by means of a shield or of compressed air. B. Some English patents relating to tunnelling with shield and compressed air, 1818 to 1904.
"Greathead, and the introduction of shield work in recent years."--Chapter I.
xv, 389,  p. incl. front. (port.) illus., diagrs.
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