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| From the Editor's Desk - 21 Sep 2017 |
| 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 are being fabricated for a project in China. These expand the TunnelTalk Table of the world's mega TBMs and add to the hundreds of TBMs of less than 14m diameter manufactured each year. |
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