Information from Herrenknecht.

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Herrenknecht News

August 2009 edition: german english

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Utility Tunnelling

Diameter TBMs < 4,20m: german english

HDD: german english

Traffic Tunnelling

Diameter TBMs > 4,20m: german english

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GOTTHARD BASE TUNNEL: MECHANIZED TUNNELLING COMPLETED ON THE NORTH SIDE.

Six months ahead of schedule the Herrenknecht Gripper TBM reaches breakthrough in the western tube from Erstfeld to Amsteg.