Not even a decade ago, four-stroke gas augers and propane augers seemed to be the way we would bore holes in the ice well into the future. But how times have ch ...
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Tunnel boring machine makes breakthrough at CBBTThe tunnel boring machine known as Chessie broke through the receiving pit on Two Island at the Thimble Shoal Channel at the Chesapeake Bay Bridge-Tunnel Monday, the CBBT said.
Nicknamed "Chessie," the tunnel boring machine broke through the receiving pit on Two Island at Thimble Shoal Channel.
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