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Tag: Big Bertha mystery object
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
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