Here's how the tunnel boring machine, or TBM, works: As the 200-ton TBM moves forward, a round cutter head studded with titanium teeth grinds into the tunnel face and splits large chunks off the rock.

On April 17, Mary the Tunnel Boring Machine emerged through the headwall at the Hampton end of the HRBT. Exactly six months later, she's starting her next journey: creating the twin eastbound ...

Motorists are being urged to 'allow extra time for journeys' when an abnormal load leaves the site early next week ...

BENTONG: The two tunnel boring machines (TBM ... He noted that the TBM cutter heads from China are equipped with four torque cylinders and weigh 900 tonnes each. They are 25m long and have ...

BENTONG: The two tunnel boring machines (TBMs), which will excavate ... says Transport Minister Datuk Seri Dr Wee Ka Siong. With a cutter head diameter of 8.98m, the entire TBM will be 266m ...

The entire three levels of the tunnel boring machine have been cut till ... or in a 3-metre long cavern behind the machine’s cutting head, which falls beyond the 50 metre zone.

Tom Irvine from Ngāti Whātua Ōrākei kicked things off. “What a wonderful day to celebrate such a boring machine,” he said. “I’ve been saving that up since ...

The removal of silt, slush and stones, coupled with destroyed and broken parts of the tunnel boring machine that had to be cut to smaller sizes that has been going on for the past fortnight also ...