giant tunnel-drilling machine named bertha

Parts of massive Seattle boring machine Big Bertha to be ...

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

Dec 18, 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.

Apr 03, 2017 · World's largest tunnel-boring machine ... when the giant machine cut through the ... Exactly what caused Bertha to stop drilling will be the subject ...

What Should the City of Atlanta Name its ... really large tunnel boring machine. Plans call for a giant tunnel to be ... did with their drill Big Bertha.

Mysterious 'unknown object' blocks progress of huge drilling ...

What is the mysterious 'unknown object' blocking progress of huge drilling machine boring ... It was named after Bertha ... or possibly a giant 'glacial erratic ...

... blocking Bertha the tunnel-driller is a giant ... Mystery object in tunnel may be giant ... brought Bertha, the giant tunnel-drilling machine, ...

A Seattle sinkhole 35 feet long formed this week as contractors were using Bertha, the world's largest tunnel-boring machine, to work on the beleaguered Highway 99 ...

The world's largest tunnel-boring machine, nicknamed Bertha, has been stuck beneath Seattle for over a year amid its efforts to build a pathway for an underground ...

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

35-Foot-Long Seattle Sinkhole Opens, Halting Bertha Tunnel ...

Bertha the Giant Drill Is Ready to Rumble in Seattle

Gizmag goes inside the world's largest tunnel boring machine

Bertha, the world's largest tunnel boring machine, today broke through a 20-foot wall of a repair pit, WSDOT reported. It will continue drilling two more…

The giant tunnel drill, nicknamed "Bertha," is seen at its ...

Drilling delays a problem for tunnel-boring machine Big ...

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

Mar 31, 2015 · They're Finally Freeing Bertha, the Biggest Tunnel-Boring Machine in ... Bertha, the giant boring machine in Seattle that's been ... Her drilling head is ...

What Should the City of Atlanta Name its Massive Drill ...

Bertha breakthrough: Seattle's giant tunnel boring machine ...

Mystery Object Blocking the Giant Tunnel Boring Machine ...

Drilling delays a problem for tunnel-boring machine Big Bertha even as she slumbers below ground

Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, ... world's largest tunnel boring machine ...

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

Giant crane to lift 4 million pounds of tunnel drill Bertha ...

To rescue the world's largest tunnel-boring machine — and the future of the Highway 99 project — you need one of the world's strongest cranes.

Alaskan Way Viaduct - Follow Bertha