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VIDEO: A drone’s-eye view of Bertha’s work inside Washington’s SR 99 tunnel
Bertha, the largest tunnel-boring machine in the world, is back at work once again and tunneling below the Alaskan Way ...
Damage to Big Bertha worse than previously thought
Now that crews are well into the process of dismantling her front-end for necessary repairs, it's clear that damage to ...
PHOTOS: Big Bertha’s 2,000-ton front end lifted to the surface. How the world’s largest tunneler was raised
After a year of slumber and almost a month after chewing her way into a 12-story repair pit, Big Bertha, the ...
PHOTOS: Fixing Bertha: How workers dug a 12-story pit to raise world’s largest tunnel boring machine from the dead
No. 8 Story in 2015 « No. 9 No. 7 » The Big Bertha saga recently received a major update: crews ...
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Myths and facts about diesel particulate filters.
There are many opinions and misconceptions out there about using diesel particulate filters (DPF or exhaust filter) for controlling engine…
VIDEO: Watch time-lapse of Highway 99 construction
The Washington State Department of Transportation was kind enough to release the following time-lapse video of construction on Highway 99. ...
Camera gives a live view of construction on Big Bertha’s 12-story repair access pit
Just because Big Bertha is down for nearly a year, that doesn't mean work around the world's largest tunnel boring ...
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 largest ...
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 halt ...
No. 6 in 2013: Big Bertha digs in before being stopped in her tracks
There's been a lot of excitement this year about the world's largest tunnel boring machine. Named "Big Bertha," she arrived ...
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 recently ...
U.S. highways are shifting to alternative interchange designs
Cummins hit with $60M lawsuit by FCA over defective emissions system in Ram pickups
VIDEO: Massive earthmover tire explosion shows why you should cage 'em before you inflate 'em
GMC unveils 2017 Sierra HD All Terrain X, its most powerful off-roader yet thanks to new 6.6L Duramax
VIDEO: Crews demo century-old Virginia St. Bridge, construct and move new one into place (Time-lapse)
Unsafe surroundings: Unrecognized hazards could cause trouble for you – or for someone else
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Hoping to impress ‘low-spec’ skeptics, LiuGong steps up its game with ...
by Tom Jackson
How Volvo CE is engineering a quarry run by electric loaders ...
by Marcia Gruver Doyle
Caterpillar CEO Doug Oberhelman to retire next year; Umpleby tapped as ...
by Wayne Grayson
Caterpillar intros M315F, M317F wheeled excavators with tool carrier, compact radius ...
by Wayne Grayson
Three views on the past, present and rapidly evolving future of ...
by Tom Jackson