The immersed tube method, a version of the cut and cover technique, is a cheap and easy way to construct a tunnel under water -- and it's generally the fastest way. Here's how it works ...

The goal is to upgrade the massive system that sends water to 27 million people, mostly in Southern California, and vast ...

What started as a mysterious water tunnel turned into an unbelievable discovery—a hidden room filled with shimmering crystals! As we navigated through the eerie tunnel, we had no idea what awaited us ...

The leak was discovered around 12:30 p.m. in the south tube on the Queen’s side of the tunnel, officials said. Water entered ...

rehabilitate and upgrade the 19-mile-long Mountain Tunnel, a key component of the Hetch Hetchy Water System that takes water from Tuolumne County and sends it to San Francisco. The San Francisco ...

Also contributing to the decision was the finding that the levels of water and slush were rising significantly inside the tunnel. The assessment of the conditions inside the tunnel was made after ...

Instead, the authorities have decided to continue efforts from within the tunnel to mitigate any potential harm to rescuers. The increased water inflow and the sudden accumulation of silt have ...

The NDRF teams noticed an earth fracture on a side of the tunnel wall, from where the seepage water was gushing in and the roof of the collapsed area was very unstable as the noises of shifting ...

raised a tunnel boring machine around 9:30 a.m. on June 26 after the tunnel, which will release water 1 kilometer off the Pacific coast, was completed. The utility also placed a cover on the ...

WASHINGTON — The National Park Service and D.C. Water are moving forward with a project to improve water quality in the District. The proposed Piney Branch Tunnel Project aims to capture and ...

Rescue officials believe a massive 3,200 litres of water is flooding the tunnel every minute, mixing with the vast quantities of sand, rock, and debris to make more mud and slush. This is not ...