TUNNELLING '79. PROCEEDINGS OF THE SECOND INTERNATIONAL SYMPOSIUM, ORGANIZED BY THE INSTITUTION OF MINING AND METALLURGY, WITH THE COOPERATION OF THE BRITISH TUNNELLING SOCIETY, THE INSTITUTION OF MINING ENGINEERS AND THE TRANSPORT AND ROAD RESEARCH LABORATORY, HELD IN LONDON FROM 12 TO 16 MARCH, 1979

The following papers are included: Ground Behaviour and Support for Mining and Tunnelling (Muirwood, AM) (Fourteenth Sir Julius Wernher Memorial Lecture of the Institution of Mining and Metallurgy). Session 1: Tunnel Portals at Dinorwic, North Wales (Paterson, T and Arthur, LJ); Dinorwic Power Station, North Wales: Design and Construction of Tunnels and Shafts (Ellis, IT, Douglas, TH and Copeland, BGT); Frejus Motorway Tunnel: Italian Side (Cannobbio, L, Scavia, U, Lunardi, P, Stragiotti, L and Pelizza, S). Session 2: Geotechnical Aspects of Shallow Tunnel Construction in Belfast Estuarine Deposits (Glossop, NH, Saville, DR, Moore, JS, Benson, AP and Farmer, IW); Geological-Geotechnical Experience in Construction of the Seelisberg Tunnel, Switzerland (Schneider, TR); Effects of Tunnelling on the Bearing Capacity and Settlement of Piled Foundations (Morton, JD and King, KH). Session 3: Experimental Criteria for Design and Control of Grouting in Sandy-Gravelly Soils (Tornaghi, R); Site Investigation Procedures Adopted for the Northumbrian Water Authority's Tyneside Sewerage Scheme, with Special Reference to Settlement Prediction When Tunnelling Through Urban Areas (Norgrove, WB, Cooper, I and Attewell, PB). (Continued on TRIS abstract nos 316977-78). (TRRL)