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Bertha is nearly ready to start tunneling again (VIDEO)
The massive tunnel-boring machine that's been sidelined in Seattle for two years could be back to boring by New Year's. The ...
Bertha delayed again; won’t restart drilling until late December
The Seattle Tunnel Partners have once again delayed the restart of drilling for the State Route 99 tunnel, with Bertha not expected ...
Board rules WSDOT should have given contractor more warning about pipe struck by Big Bertha before stall
In regard to the drilling of the new State Route 99 tunnel below Seattle, the Washington State Department of Transportation ...
Did Seattle’s SR 99 tunnel really require Big Bertha? Indeco argues breakers are the answer
Tunnel boring machines such as Big Bertha, the 7,000-ton machine sidelined after a massive fail under the streets of Seattle, ...
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Water main damaged by Big Bertha repair excavation could cost WSDOT $4 million
Four months after crews temporarily stopped excavation on a repair pit for the world's largest tunnel-boring machine due to ground sinkage, ...
Big Bertha’s delays have pushed back the opening of the tunnel it’s digging by 20 months…so far
Seattle's new State Route 99 tunnel is officially 20 months behind schedule, and it's all Bertha's fault. The Associated Press reports ...
Drilling delays a problem for tunnel-boring machine Big Bertha even as she slumbers below ground
Crews in Seattle are now expected to finish digging a 12-story pit to reach stalled tunnel-boring machine Big Bertha one ...
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 below ...
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 ...
PHOTOS: Amazing images of subway construction in the man-made caverns below New York City
Back in June we showed you a handful of pictures from deep below New York City. And while they depicted ...
Lady Bird is the 1,300-ton tunnel-boring machine digging DC’s 13-mile sewer tunnel (PHOTOS, VIDEO)
Each year in Washington, D.C., about 2 billion gallons of raw sewage is dumped into the Potomac River, the Anacostia River ...
VIDEO: Watch as a massive Komatsu PC8000 mining shovel is assembled in this time-lapse
VIDEO: Entire Erques Bridge construction chronicled in beautiful time-lapse
Cat to end track drill production, intends to sell room and pillar underground mining machine business
John Deere unveils 2 large-frame skid steers, 2 CTLs in G Series power boost
With VP Henricks's retirement, Caterpillar cuts more jobs in consolidation of tech, R&D efforts
Unsafe surroundings: Unrecognized hazards could cause trouble for you – or for someone else
GO TO SAFETY WATCH
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compact track loaders
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