SEATTLE (AP) — Experts say they’ve at least partially solved the mystery of what’s been blocking a massive tunnel-boring machine beneath downtown Seattle for the past month: a steel pipe. The $80 ...

The study of disc cutter wear in tunnel boring machines (TBMs) is fundamental to optimising both the economic and operational performance of subterranean construction projects. Disc cutter wear ...

At nearly $350 million, a project to bore a tunnel under the City of Columbus is the most expensive in the city’s history. When completed, the 4-mile tunnel should fix a major environmental problem in ...

A screen grab from the video showing workers replacing a tunnel machine cutting tool. (Via WSDOT YouTube) Next time I think about requesting a stand-up desk or I ask for the air conditioning to be ...

Within a few days, the final pieces of tunnel-boring machine Bertha’s famed cutting disc will be removed and taken to a scrap-metal yard. Only two of the eight longest spokes, plus the center, ...

At the deepest reaches of a tunnel 600 feet beneath the shore of Lake Mead, workers have spent the past few weeks swapping out parts and repairing damage to the business end of a massive tunneling ...

The Boring Company’s “cutting-edge technology” got a shout-out from billionaire founder Elon Musk tonight after the venture’s tunneling machine, nicknamed… Read More Bye bye, Bertha. The Seattle ...

Recent advancements in rock cutting and tunnel boring machine (TBM) performance have underscored the importance of optimising cutter design, operational parameters and understanding rock fracture ...

The first four tunnel boring machines are coming to New Jersey to build the Gateway rail tunnel. Here's what they do and why they're the safest method.

China's largest shield tunneling machine cutter head, with a record-breaking diameter of 16.64 meters, descended at the construction site of the Haitai Yangtze River Tunnel in East China's Jiangsu ...

VIRGINIA BEACH — Now that the anchor’s away, expansion work at the Chesapeake Bay Bridge-Tunnel is back at full bore. Burrowing of a new tunnel to help carry more vehicles between Virginia Beach and ...