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bertha the giant tunnel-boring machine

Seattle tunnel progress a major contrast to past problems

Seattle tunnel progress a major contrast to ... Bertha, the Seattle tunnel boring machine, ... engineers discovered problems with the giant tunnel boring machine's ...

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Bertha Finally Breaks Through In Seattle : The Two-Way : NPR

Apr 03, 2017 · Bertha Finally Breaks Through In Seattle : The Two-Way After a two-year delay for repairs, the giant tunnel-boring machine has completed its mission far beneath the city's streets.

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seattle tunnel boring machine stuck - Cutting Head

But as the largest tunnel boring machine in the world, Bertha can't just be put on a truck and wheeled off ... Bertha, The Giant Tunnel-Boring Machine Stuck Under ...

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Tunnel boring machine - Wikipedia

A tunnel boring machine ... TBMs that resembled giant hole saws were proposed. ... An earth pressure balance TBM known as Bertha with a bore diameter of 17.45 metres ...

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GeekWire - Bertha, the giant tunnel-boring machine that...

Bertha, the giant tunnel-boring machine that has been drilling the new Hwy 99 tunnel is scheduled to emerge today at the end of its journey.

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Seattle tunnel, among world's biggest, takes step toward ...

Apr 03, 2017 · Workers make preparations to lift the cutting head from Bertha, the world's largest tunnel-boring machine, and lift it out for repairs in Seattle, Washington March 9, 2015.

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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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Bertha reaches daylight - Feb. 19, 2015 - YouTube

Feb 18, 2015 · On Feb. 17, 2015, Bertha, the SR 99 tunneling machine, began mining into the southern wall of the pit crews will use to access and repair the machine. At mid...

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Bertha breaks into repair vault | The Today File | Seattle Times

Tunnel-boring machine Bertha's ... The giant drill has spent ... WSDOT construction cameras appear to be capturing dust clouds over Bertha's repair vault.

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

Crews struggled for weeks to reach the object that was blocking 'Bertha', the boring machine, ... tunnel boring machine is ... Giant Tunnel Boring Machine ...

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#BerthaCam: Watch the giant boring machine at the end of ...

Giant tunnel-drill machine Bertha broke into daylight shortly before 11:30 a.m. Tuesday after years of delays. We covered the scene live.

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The World's Largest Tunneling Machine Is (Finally) Getting ...

Bertha, the world's largest tunneling machine, has been stuck under downtown Seattle since it broke in December 2013. Engineers have had to concoct a massive and expensive rescue plan—essentially a whole construction project in itself.

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The world's biggest boring machine Bertha is taken out for ...

The machine, known as Bertha, stopped working in December 2013 after digging just 1,000ft of its two mile trip to replace an aging waterfront highway in Seattle.

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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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They're Finally Freeing Bertha, the Biggest Tunnel-Boring ...

Bertha, the giant boring machine in Seattle that's been stuck in a subterranean hellscape since December 2013, is finally going to see the light of day once again.Her drilling head is free and ready for repair.

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Bertha, The Giant Tunnel-boring Machine - Video Results

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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 Blocking the Giant Tunnel Boring Machine ...

The world became fascinated with a five-story tunnel boring machine digging ... Mystery Object Blocking the Giant Tunnel Boring Machine Nicknamed 'Bertha ...

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Gizmag goes inside the world's largest tunnel boring machine

Gizmag took a look inside the giant machine. On Saturday,the world's largest tunnel boring machine was ... The cutting head of Bertha, a tunnel boring machine ...

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Bertha, The Giant Tunnel-Boring Machine Stuck Under Seattle ...

The machine has been stuck beneath the city for over a year, but has dug through 6 feet of soil this week.

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

The biggest tunnel-boring machine ever to get ... A kid dressed as Bertha for Halloween. A woman made a giant meatloaf ... on the job is the actual tunnel boring ...

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Bertha, The Giant Tunnel-boring Machine - Image Results

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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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Bertha breaks through: World's largest boring machine ...

The normally sedate city of Seattle sounded more like the set of a science fiction epic today as the world's largest boring machine roared and screeched its way into the open air. The tunnel boring machine, better known as "Bertha" cut through a wall of reinforced concrete in the shadow of the city ...

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

Apr 03, 2017 · Bertha the tunneling machine broke through a new concrete wall into a disassembly pit. At first it was hard to see the machine's arrival through clouds of dust.

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