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Tunnelling research in the Dept of the Environment in the
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Atlas Copco British Tunnelling Society cable carbon monoxide centre Channel Tunnel civil engineering compressed air concrete construction consulting engineers contract contractors conveyor cost cross cross harbour tunnel cutting diameter diesel discs drilling driving duct Edmund Nuttall electric enter Ref excavation face fans flow further information Gotthard road tunnel grouting hard rock Hay and Anderson head holes hydraulic information please enter installed jacking jumbo length Liner Plates load London maximum ment Mersey Tunnel method metres mining Mont Blanc tunnel muck nitrogen dioxide operation pipe pipe jacking pollution portal pressure problem production pump railway reader reply card ring road tunnel segments sewer shaft shotcrete speed stations steel supply surface Telephone Telex tests thrust tion traffic transport tube tunnel lining tunnel shield Tunnelling equipment tunnelling machine Tunnels and Tunnelling underground unit vehicles