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largest tunnel-boring machine
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 ...
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 ...
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
Nikola says its 2,000-hp electric hauler is 100% emissions-free
Cat to end track drill production, intends to sell room and pillar underground mining machine business
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
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Cat to end track drill production, intends to sell room and ...
by Wayne Grayson
Work truck, heavy hauler emissions regs tighten with release of EPA/USDOT ...
by Jason Cannon
Test Drive: 2017 Nissan Titan Platinum Reserve is one fancy work ...
by Tom Quimby
Construction’s Digital Divide: It’s culture, not age, that makes contractors tech-hesitant ...
by Tom Jackson
Test Drive: We punish Ford’s 2017 Super Duty with a rocky ...
by Tom Quimby