Removing A Tunneling Machine From The Ground Is Strangely Difficult

Tunnel-boring machines are genuine marvels of modern technology — self-contained contraptions big enough to build entire subway tunnels, a job that used to require thousands of pick-axes and the sacrifice of quite a few lives. But once construction is finished, getting the machines out can take months. » 2/21/15 1:00pm 2/21/15 1:00pm

This Giant "Straw" Will Suck Vegas's Water From the Desert

Las Vegas gets 90 percent of its water from Lake Mead, the lake created by the Hoover Dam about 45 miles away. It’s also a lake that’s only half full—with water levels that are decreasing every year. Now the city must dig a massive tunnel that will dip deeper into the lake to ensure Las Vegas’s water supply doesn’t… » 6/12/14 6:40pm 6/12/14 6:40pm

Big Bertha Is Digging Seattle's Massive Underground Freeway

The 2001 earthquake that brought down a length of State Route 99 running through downtown Seattle was a measly 6.8 on the Richter scale. But rather than rebuild the Alaska Viaduct, as the double-decker section was known, city officials instead decided to take the freeway underground in their very own Big Dig. To do… » 7/05/13 4:30pm 7/05/13 4:30pm