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Tag: TBM overheating
Construction Equipment
Another mystery overheats, halts tunnel-boring machine Big Bertha once more
The Washington State Department of Transportation officials in charge of the world’s largest tunnel-boring machine have another mystery on their hands deep below Seattle. After finally getting moving again last week following a two-month period of downtime, Big Bertha has been halted once again. This time, for a different, and unknown, reason. Workers put Bertha […]
February 4, 2014
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