Sp Collins

DISCUSSION. THE USE OF ROCK TUNNEL MACHINES.

Am Muir Wood, Dd Land, John J. Buchanan, 1973 .

SHAFT SINKING BY GROUND FREEZING: ELY OUSE-ESSEX SCHEME

Sp Collins, Wg Deacon, 1972 .

DISCUSSION. DESIGN AND CONSTRUCTION OF THE CARGO TUNNEL AT HEATHROW AIRPORT, LONDON.

Am Muir Wood, Jv Bartlett, Baa, 1971 .