TBM Karen will excavate the second bore of the 4.5-mile Euston Tunnel.

A 125m-long tunnelling machine has completed excavation of the final HS2 tunnel, marking a major milestone for the £140bn rail project. The machine, named Elizabeth, broke through after 19 months ...

HS2 has reached a major milestone with the launch of its final tunnel boring machine (TBM), marking another step forward for ...

Launched from Old Oak Common in west London on March 16, the 1,624-ton machine - named “Karen” - will excavate the second ...

A large tunnelling machine has begun drilling the sloped spiral ramp of the Beishan Underground Research Laboratory near Jiuquan City in China's Gansu province. The laboratory - in the Gobi Desert - ...

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Montreal metro blue line construction site welcomes tunneling machine Montreal construction crews working on the metro's blue line showed off the tunnelling machine that will be used to bore its way ...