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 ...

Chennai Metro Rail's tunnel linking Light House with Thirumayilai for phase II project to be completed by September.

China has completed the production of its largest tunnel-boring ... river dams. The machine is 476 feet long and weighs about ...

Liam Clarke and his father Graham are miners on a tunnel boring machine ... These machines will then be hauled out and decommissioned. Michael Greiner is the head of tunnelling at SCS JV.

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 ...

The Tonnelle Avenue overpass and relocation of utilities in North Bergen is expected to be completed in October to accommodate the tunnel entrance.

The world's largest earth pressure balance (EPB) double shield hybrid tunnel boring machine, or TBM ... allow operators to monitor over 20 real-time parameters – including cutter head rotation speed ...