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

Big Bertha, world's largest tunnel-boring machine, arrives in Seattle . Wayne Grayson ... Big Bertha is the world's largest tunnel-boring machine.

One Of The World's Biggest Tunnels Was Hit By Sinkhole. Now ...

Bertha, one of the world's largest tunnel boring machines, emerged north of downtown Seattle on Tuesday shrouded in clouds of dust and chunks of falling concrete ...

Tunnel boring machine - Wikipedia

A tunnel boring machine ... It was delivered to Seattle, Washington, ... 2.M-30 EPB Tunnel Boring Machine - the largest built in the world;

Seattle tunnel, among world's biggest, nears completion - Yahoo

Apr 04, 2017 · Seattle's tunnel-drilling machine, Bertha, the world's largest tunnel-boring machine starts breaking through the concrete wall in Seattle, Washington, U ...

Seattle Tunnel, Among World's Biggest, Takes Step Toward ...

Bertha, one of the world's largest tunnel boring machines, emerged north of downtown Seattle on Tuesday shrouded in clouds of dust and chunks of falling concrete ...

Hard grind: The epic journey of the world's biggest tunnel ...

On April 4, the world's largest tunnel boring machine broke through to the open air after almost four years underground. Called Bertha, the giant digger was tasked ...

America's Biggest Tunnel-Boring Machine Is Stuck Beneath Seattle

Poor Bertha. North America's largest tunnel-boring machine, measuring 57.5 feet in diameter, hasn't moved more than 4 feet along its 1.7-mile route since Dec. 7.

Big Bertha -- world's largest tunnel boring machine -- facing ...

Dec 24, 2013 · Named after one of Seattle's early mayors, ... Big Bertha -- world's largest tunnel boring machine -- facing big Seattle challenge CBS Evening News.

World's largest tunnel-boring machine finally breaks through ...

SEATTLE — The world's largest tunnel-boring machine broke through a concrete wall beneath Seattle on Tuesday to reach the end of its long, troubled...

Alaskan Way Viaduct - Follow Bertha

The SR 99 tunneling machine, nicknamed Bertha, ... this page tracked her progress beneath Seattle. With the machine dismantled and removed, we are now tracking tunnel ...

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

Apr 03, 2017 · Water from Seattle?s tunnel-drilling machine, Bertha, the world's largest tunnel-boring machine starts breaking through the concrete wall from the bottom creating massive dust in the disassembly pit in Seattle, Washington, U.S., April 4, 2017. REUTERS/Karen Ducey.

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

From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine headed out of the muck and into daylight on ... the world's largest tunnel boring machine, ...

Largest Tunnel Boring Machine Seattle - Image Results

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

The World's Largest Tunnel-Boring Machine Must Be Saved. Bertha has stalled deep beneath Seattle, leaving the city's planned waterfront renaissance hanging in the ...

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 ...

World's largest tunnel-boring machine reaches end of journey ...

seattle — the world's largest tunnel-boring machine broke through a concrete wall beneath seattle earlier this month to reach the end of its long, troubled ...

World's largest tunnel boring machine lands in Seattle ...

Known affectionately as Bertha, this tunnel boring machine has the widest diameter of any boring machine ever built; 57.5 feet. It's being used to dig a highway ...

Seattle's long-broken tunnel-boring machine set to resume Nov. 23

Jul 16, 2015 · Workers look on as they lift the machine head from Bertha, the world's largest tunnel-boring machine, from an access pit for repairs in Seattle, Washington ...

Largest Tunnel Boring Machine Seattle - Video Results

Gizmag goes inside the world's largest tunnel boring machine

On Saturday,the world's largest tunnel boring machine was dedicated in the city of Seattle. "Bertha," as it's known, will spend the next 14 months boring a 1.7 ...

The largest tunnel boring machine (TBM) in the world finished ...

Thursday, 22 June 2017 12:00 The largest tunnel boring machine (TBM) in the world finished drilling underneath Seattle Written by TheStructuralEngineer ...

World's largest tunnel boring machine lands in Seattle ...

Known affectionately as Bertha, this tunnel boring machine has the widest diameter of any boring machine ever built; 57.5 feet. It's being used to dig a highway ...

Big Bertha – world's largest tunnel boring machine – facing ...

Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, weighs 6,700 tons, and does much more than drill. John Blackstone ...

Big Bertha – world's largest tunnel boring machine – facing ...

Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, weighs 6,700 tons, and does much more than drill. John Blackstone ...

Bertha (tunnel boring machine) - Wikipedia

Seattle Tunnel Partners (STP), the ... The insurers claimed that the tunnel-boring machine's capabilities were inadequate ... Previously the world's largest tunnel ...