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Waterproof plastic lines Drakensberg's tunnels
24 December, 1980
Technology at the Face
24 December, 1980
Speedy mucking out is key to TBM success on Manhatten Subway
24 December, 1980
Linear rock cutting rig tests tools in the Laboratory
24 December, 1980
A first at Oxford for the 'One Pass' system
27 November, 1980
Largest TBM holes through in Chicago
27 November, 1980
Trevithick's 1807 river tunnel
27 November, 1980
Swedish phones are war proof
27 November, 1980
Shock absorber' in underground control centre
27 November, 1980
Call in the private sector
27 November, 1980
Up, up and away. Vertical belt conveyor for muck removal
27 November, 1980
International assignment
27 November, 1980
Sewer relining the resign segment way
27 November, 1980
Melbourne Metro loop nears completion
27 November, 1980
Sri Lanka success for Anglo-Finnish Jumbos
27 November, 1980
French tunnel helps form inter-continental link
27 November, 1980
Structural design models for tunnelling (ITA)
27 November, 1980
Grouting technology 'in the bag'
27 November, 1980
Hydroelectric station tunnelling in Northern Sweden
27 November, 1980
Japan's longest Highway tunnel
27 November, 1980