Tag: Big Bertha delay

Construction Equipment

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 brought to a halt 60 feet beneath the streets of Seattle, Washington when it hit an unknown object and could move no farther, reported KOMOnews.com. The five-story head of the machine was completely brought […]

December 19, 2013