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Repairs to Big Bertha will include 86 tons of steel reinforcement to tunnel-boring machine’s bearing, cutter drive
The largest tunnel-boring machine in the world needs a bit of reinforcement against the "wet and abrasive soils" deep ...
Repairs to Big Bertha will require a 12-story pit and removing the tunnel-boring machine’s cutterhead
Officials from the Washington State Department of Transportation have announced that in order to repair the world's largest tunnel-boring ...
Construction worker uncovers mammoth tusk from Ice Age (VIDEO, PHOTOS)
While excavating for plumbing trenches on the jobsite of a high-rise apartment complex in the Seattle, Washington neighborhood of ...
Tunnel-boring machine Big Bertha shut down for “months” due to complexity of needed repairs
Washington State Department of Transportation officials say Big Bertha, the world's largest tunnel-boring machine, is likely out of commission ...
From our partners
Presented By: Sonetics
7 Signs Heavy Equipment Operators Need Better Communication
For heavy equipment operators, their office is the cab. That’s where they’re comfortable. That’s where they’re calling the shots. But…
VIDEO: Baby Bertha? Bechtel builds mini tunnel-boring machine using 50,000 Legos
The Lego Movie, which hit theaters this past weekend, is fantastic. But we wish the folks who made it ...
VIDEO: Claw and shear painted like a Seahawk rip apart a Ford Bronco in a spot-on Super Bowl prediction
"This is a special occasion." That's why Lisa Parberry, who co-owns the Scrap-It recycling center in Ferndale, Washington, says she ...
Tunnel-boring machine Big Bertha moves forward 2 feet in test run to see if blockage is fully removed
After nearly two months of downtime caused by a steel pipe stuck in her teeth, Big Bertha, the world's ...
A steel pipe is what brought Big Bertha, the world’s largest tunnel-boring machine, to a halt
The mystery is solved—in part at least. After Big Bertha, the world's largest tunnel-boring machine, was brought to an abrupt ...
Unstoppable Force, Immovable Object: Seattle’s Big Bertha halted by mystery object
Has Big Bertha met her match? She has, at least for the time being. The world's largest tunnel-boring machine was ...
Is green building movement enough to revive use of heavy timber for framing in construction?
"Green building" and the aim to reduce carbon emissions in the construction of a building are fine goals. But ...
Top 5 Cities for Electric Cars
Some of the cities on this list are probably obvious, but I was surprised about a few of the ...
Subway expansion in Delhi to set record with simultaneous use of 34 tunnel-boring machines
Seattle might have the world's largest tunnel-boring machine, but Delhi, India will soon have a record-setting host of the ...
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Backhoes are getting better as CTLs, compact excavators chip away at market share
Test Drive: 2017 Chevrolet Silverado 2500 4×4 is a pickup built to tow—and keep you connected
Caterpillar will move global HQ to Deerfield, lll., beginning this year
John Deere unveils Fixstern: A lightweight vision for the backhoe of the future (VIDEO)
Ford files patent for sliding pickup bed
Dragged to his death: How to prevent chipper accidents
GO TO SAFETY WATCH
Caterpillar will move global HQ to Deerfield, lll., beginning this year ...
by Wayne Grayson
John Deere unveils Fixstern: A lightweight vision for the backhoe of ...
by Marcia Gruver Doyle
Test Drive: Kenworth’s T880S is a more versatile replacement for the ...
by Jason Cannon
Cat D8T moves more at less cost with several new options ...
by Wayne Grayson
Kobelco launches slew of new excavators, improved models
by Don McLoud
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