1. Tunnelling trials in chalk: rock cutting experiments;Hignett,1977
2. A laboratory and pilot-scale study on the cutting of chalk containing flints;Crabb;Tunnels & Tunnelling,1980
3. Programme of laboratory pilot and full-scale experiments in tunnel boring;O'Reilly,1976
4. The arrangement of rock cutting tools on full-face tunnel boring machines;Hignett,1978
5. A linear rock cutting rig;Snowdon,1981