They are digging a two-mile-long tunnel to help keep millions of gallons of raw sewage out of nearby waterways. And they have a lot of help: a massive drill named “Hazel” that weighs 380 tons ...

The seven-month dig was part of a $58 million wastewater treatment infrastructure project in Clackamas County.

the east-flowing river makes a sharp U-turn at a point in the deep gorge before flowing south, just ahead of entering Arunachal Pradesh in India. The project involves drilling four tunnels, 20 ...

A tunnel boring machine has been working around the clock for a year and a half, grinding through 25 millimeters of rock a ...