The tunnel boring machine is driving the roughly 10.5-mile headrace tunnel from the high level Tantangara Dam to an underground powerhouse. A second TBM will form the 3. 7-mile tailrace down to ...

In an interview, he recalled the final days of the battle for the Iraqi city of Mosul, where Islamic State fighters hid in a series of tunnels in 2017. “Our Iraqi soldiers were clearing out ...

SAFETY IN RIVER TUNNELS; Pennsylvania Road Decides on Method of Construction. Will Have Concrete Sidewalks Level with Car Windows -- Great Under- ground Station -- Bids Advertised For.

Set to open in 2021, the ambitious Tunnel Tops project, designed by James Corner Field Operations (the firm behind New York’s High Line), will create an entirely new 14-acre park atop two ...

Autonomous Air-ground Cooperative Tunnel Inspector incorporates three cutting-edge technologies: multi-robot cooperation between Unmanned Ground Vehicle (UGV) and Unmanned Aerial Vehicle (UAV ...