Herrenknech 19.25 m diameter Mixshield

With a diameter of 19.25 m, the tunnelling shield, designed to link both halves of the center of St. Petersburg under the River Neva, sets a new world record.



19,25 m Herrenknech...: None Bigger: contract signing for Orlovski Tunnel TBM - Herrenknecht AG : None Bigger Tunnel boring machine for Orlovski tunnel br...
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