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 ...

ALEXANDRIA, Va. — For 16 months, a 360-ton tunnel-boring machine, affectionately named Hazel has drilled underneath Old Town, Alexandria. When she came up for air last week, she marked a big ...

There’s an aggressive seven-year timeline to get it all done. Hazel, a custom-made tunnel-boring machine, is the star of the show. “It’s essentially a giant drill with a rotating cutter head ...

A crucial race against the clock to dig a tunnel under the Potomac River depends on a powerhouse player: a 15-foot-wide, 380-ton machine named “Hazel.” This round metal device, a custom-made ...

The 380-ton tunnel boring machine named “Hazel” was lowered 138 feet — or about 12 stories — into a pumping shaft near Alexandria’s waste water treatment plant last month. The boring ...

The key to that future is 360-ton tunnel-boring machine, affectionately named Hazel. Hazel has not seen the light of day since November 2022. Over the last 16 months, Hazel and her highly skilled ...

“This project will reduce that to about 17 million gallons.” Hazel, a tunnel-boring machine custom made from Germany, is in charge of digging the tunnel. Behind Hazel, a new tunnel structure ...