More From tunnel-boring

Big Bertha wakes from one-year nap, begins to chew her way into repair pit

Big Bertha wakes from one-year nap, begins to chew her...

Posted by Wayne Grayson on Feb 19, 2015

For the first time in more than a year, Big Bertha actually bored. According to a report from the Seattle Times, the world's largest ...

Big Bertha’s delays have pushed back the opening of the tunnel it’s digging by 20 months…so far

Big Bertha’s delays have pushed back the opening...

Posted by Wayne Grayson on Dec 24, 2014

Seattle's new State Route 99 tunnel is officially 20 months behind schedule, and it's all Bertha's fault. The Associated Press reports ...

Excavation stopped on Big Bertha repair pit due to major ground sinkage in area

Excavation stopped on Big Bertha repair pit due to...

Posted by Wayne Grayson on Dec 15, 2014

The latest in a long string of delays to affect tunnel-boring machine Big Bertha has far greater implications than any of the ...

PHOTOS: Amazing images of subway construction in the man-made caverns below New York City

PHOTOS: Amazing images of subway construction in the...

Posted by Wayne Grayson on Apr 07, 2014

Back in June we showed you a handful of pictures from deep below New York City. And while they depicted ...

Subway expansion in Delhi to set record with simultaneous use of 34 tunnel-boring machines

Subway expansion in Delhi to set record with...

Posted by Wayne Grayson on Jun 28, 2013

Seattle might have the world's largest tunnel-boring machine, but Delhi, India will soon have a record-setting host of the machines ...

Caterpillar to layoff 300 at mining facility in Illinois, close tunneling plant in Toronto

Caterpillar to layoff 300 at mining facility in...

Posted by Wayne Grayson on May 06, 2013

In the wake of a first quarter that saw profits tumble 45 percent, mostly due to low demand for mining ...

advertisement
advertisement
advertisement
advertisement