Watch: Bertha breaks through Seattle waterfront tunnel ...

- The cutter head of the Washington State Department of Transportation's Big Bertha Highway 99 tunnel boring machine is ... breaks through Seattle waterfront tunnel.

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Alaskan Way Viaduct - Follow Bertha

Follow Bertha Thank you for following Bertha. The SR 99 tunneling machine, nicknamed Bertha, has completed her work. For the latest tunnel progress, visit our new tracker page.

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tunnel boring machine | Equipment World | Construction ...

The Seattle Tunnel Partners have once again delayed the restart of drilling for the State Route 99 tunnel, with Bertha ... Tunnel-boring machine Big Bertha shut down ...

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The end is near for Bertha: After nearly 2 miles in 4 years ...

Bertha has made it to the finish line. The celebrity boring machine's arrival near Seattle Center, some 29 months late, guarantees a Highway 99 tunnel bypassing downtown.

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The World's Largest Tunnel-Boring Machine Must Be Saved

You put your head down and you think big, ... The biggest tunnel-boring machine ever to get ... High pressure deep in a tunnel forces the muck up Bertha's ...

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Bertha (tunnel boring machine) - Infogalactic: the planetary ...

Bertha, also known as Big Bertha, is a 57-foot-diameter (17.4 m) tunnel boring machine built specifically for the Washington State Department of Transportation's (WSDOT) Alaskan Way Viaduct replacement tunnel project in Seattle.

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king5.com | Seattle's tunnel machine Bertha breaks through ...

It's official - Bertha has broken through! Seattle's tunnel boring machine that's been digging beneath the city for the State Route 99 tunnel reached the end of its 1.75-mile journey Tuesday, nearly four years after it embarked on the job. Just before 10 a.m., Bertha pierced the cement wall of the ...

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Bertha (tunnel boring machine) - Wikipedia

Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and is the world's largest earth pressure balance tunnel boring machine, at a cutterhead diameter of 57.5 feet (17.5 m) across.

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'Mystery object' that stopped $80m drilling machine for weeks ...

An unknown object that stopped the world's most powerful tunnel boring machine ... Bertha is a five story-high drilling machine that ... big winners in The Queen's ...

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How a Tunnel-Boring Machine Drills Underground - YouTube

Jul 12, 2012 · Video courtesy of CDM/HMM Joint Venture - For engineering enthusiasts and anyone who's interested in the mechanics of siphon construction, this animation shows exactly how the 110-ton, 300-foot-long tunnel boring machine will drill a distance of nearly two miles, 100 feet beneath the New York Harbor seabed.

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Alaskan Way Viaduct - Tunneling

The tunneling machine known as Bertha began tunneling beneath Seattle in July 2013 (photo at right: ... + Bertha's tunnel route

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Tunnel Machine Big Bertha Drilling Machine - Video Results

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Pictured: The world's most powerful tunnel-boring machine ...

Bertha broke down under the city of Seattle after striking an eight-inch steel pipe while drilling a tunnel ... Bertha, a five story-high drilling machine that ...

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Under Seattle, a Big Object Blocks Bertha. What Is It? - The ...

Dec 19, 2013 · In October, workers walked through the first rings of the highway tunnel being built under Seattle's waterfront toward the boring machine called Bertha.

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Big Bertha: Mystery object blocks Seattle's tunnel drill ...

The world's biggest tunnel boring machine, named after Seattle's first female mayor, has been brought to a halt

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Prosaic Pipe Stymied Seattle's Big Bertha - The New York Times

Jan 03, 2014 · What stopped the world's biggest tunnel-boring machine? A cottage industry of speculation yields to mundane metal.

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seattle tunnel boring machine updated,Roadheader in Mining

Even though contractors filled the hole, the ground above the tunnel-boring machine Bertha is continuing ... big bertha tunnel boring machine updated; ...

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Seattle Restarting Bertha, the Broken Tunnel Machine | Fortune

Stuck underground for years, Seattle's Bertha tunnel boring machine will soon tremble to life once more.

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World's biggest tunnel machine Bertha emerges from ... - Autoblog

Bertha, the world's largest tunnel-boring machine, ends its journey today. It has spent four years traveling less than two miles to build a new car tunnel underneath Seattle.

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Seattle's Big Bertha Tunneling Machine Is Finally Back on Track

We've covered the saga of the SR99 tunneling machine, better known as Bertha, since it broke down after only drilling though just 52 feet in three days of operation. Now the Seattle tunnel boring machine is finally back on track.

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Bertha, Seattle's SR 99 Tunneling Machine, Is Finally Done ...

Apr 03, 2017 · WIRED's biggest stories delivered to ... leaving a 1.7-mile tunnel behind ... Bertha the tunneling machine broke through a new concrete wall into a ...

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Big Bertha, world's largest tunnel-boring machine, arrives in ...

The "Big" in Bertha's name isn't there for the catchiness. It's there because it's apt. With a 57-foot diameter and a length of a football field, Big Bertha is the world's largest tunnel-boring machine.

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Tunnel Machine Big Bertha Drilling Machine - Image Results

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Gizmag goes inside the world's largest tunnel boring machine

On Saturday,the world's largest tunnel boring machine was ... was chemicals and water to Bertha both for drilling and to cool the ... a big machine.

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Watch Bertha, the world's largest tunnel boring machine ...

Watch Bertha, the world's largest tunnel boring machine, emerge from beneath Seattle. by Kurt Schlosser on April 4, ... Bertha's big breakthrough is here: ...

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