TUNNELLING 82. PAPERS PRESENTED AT THE THIRD INTERNATIONAL SYMPOSIUM ORGANIZED BY THE INSTITUTION OF MINING AND METALLURGY WITH THE COOPERATION OF THE BRITISH TUNNELLING SOCIETY, THE INSTITUTION OF MINING ENGINEERS, THE TRANSPORT AND ROAD RESEARCH LABORATORY, DEPARTMENT OF THE ENVIRONMENT/DEPARTMENT OF TRANSPORT AND THE INTERNATIONAL TUNNELLING ASSOCIATION (CONTD)

(Continued from TRIS abstract no 368977.) Structural design models for tunnels (Duddeck,H and Erdmann,J); Seikan tunnel, Japan: Present position (Fujita,M, Nishimura,T and Kitamura,A); Controlled tunnel blasting (Lande,G, Clarke,D and Wilton,TJ); Construction of a section of the Du Toitskloof tunnel by use of ground freezing (Cockcroft,TN, Denne,RJ and Harvey,SJ); Selby drifts: ground treatment with particular reference to freezing technique (Forrest,W); Effect of artesian aquifer on feasibility of Buffalo lrrt project (Guertin,JD and Flanagan,RF); Compartive study of performance of new and worn disc cutters on a full-face tunnelling machine (Kutter,HK and Sanio,H-P); Review of tunnelling activity in Hungary (Greschih, G; Mueller,M).