Copperthwaite W.C. Tunnel shields and the use of compressed air in subaqueous works

London, Archibald Constable & CO LTD James Street Haymarket, 1906. - 408 p.
ISBN: 978-0-7277-5267-3The shield: its early history, 1818 to 1880
The use or compressed air in engineering work: its early history and some notes on caisson sickness
Cast iron lining for tunnels
The Greathead shield in London Clay
The shield in water-bearing strata
The shield in masonry tunnels
Recent tunnelling work carried out with a shield or with compressed air
Cost or the shield
A chronological list of events connected with tunnelling by means of a shield or of compressed air
Some english patents relating to tunnelling with shield and compressed air, 1818 to 1904