More From Big Bertha Tunnel-Boring Machine
Posted by Wayne Grayson on Jun 18, 2014
The largest tunnel-boring machine in the world needs a bit of reinforcement against the "wet and abrasive soils" deep below ...
Posted by Wayne Grayson on Feb 28, 2014
Officials from the Washington State Department of Transportation have announced that in order to repair the world's largest tunnel-boring machine, ...
Posted by Equipment World Staff on Dec 30, 2013
There's been a lot of excitement this year about the world's largest tunnel boring machine. Named "Big Bertha," she arrived ...
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