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Horseshoe-shaped TBM innovation
Horseshoe-shaped TBM innovation
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From the Editor's Desk - 26 Sep 2019
There have been many variations on the TBM theme - from blade shields to multi cutterhead models. The horseshoe-shaped machine promises savings on excavated area and volume for long distance road and rail projects. Maybe it has more chance of breaking the circular cutterhead TBM dominance than the more elaborate shield shapes and multi-cutterhead concepts.

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