Years
About 4 results
The lift mechanism that is moving the segment is attached under the conveyor which removes the excavated material (tunnel ...
From: commoditysampler
Added: 17 years ago
Views: 2,022
From: commoditysampler
Added: 17 years ago
Views: 2,149
These videos depict concrete tunnel linners being moved up and into position, to be installed. Normally tunnels of this size are ...
From: commoditysampler
Added: 17 years ago
Views: 2,236
This is the beginning of a tunnel that will be 50 feet below the surface of a river. The concrete pieces are called tunnel liners or ...
From: commoditysampler
Added: 17 years ago
Views: 13,623
