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  • 'Bertha' begins digging Seattle tunnel add to reading list  

    Posted on July 31, 2013 at 5:09 AM

    "This is what delicious looks like," Bertha the tunnel boring machine said via Twitter as she began digging underneath downtown Seattle on Tuesday. At first Bertha will dig about six feet a day, but that will increase to 35 feet per day.

    By KING 5 News and Associated Press

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