The steel pipe that tunnel machine Bertha hit in early December - TopicsExpress



          

The steel pipe that tunnel machine Bertha hit in early December was used in 2010 and discussed in the Highway 99 project’s contract documents. But the pipe might not be Berthas only problem. “As to the cause of the current tunneling stoppage, we have all agreed that it is highly unlikely that the well casing is the only issue facing the machine,” said state Transportation Secretary Lynn Peterson in a letter to the projects contractor.
Posted on: Sun, 26 Jan 2014 16:34:33 +0000

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