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.

Exploring the curious tradition of naming tunnel boring machines after women and sharing some notable examples.

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

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

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 ...

Technical staff conduct inspection inside "Jianghai," a giant self-developed tunnel boring machine deployed for the construction of the Haitai Yangtze River Tunnel, in Haimen, east China's Jiangsu ...