VIDEO Feature

Bye bye to TBM Bertha in Seattle

TunnelTalk video library

Editor's Desk

The age of mega TBMs of more than 14m in diameter, is advancing without hesitation. As TBM Bertha is disassembled in Seattle, two machines of 16m plus are needed for Melbourne, Australia and a slurry TBM of 15m plus is in fabrication for a project in China.

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