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  • World's largest boring machine arriving for big Seattle digadd to reading list  

    Posted on April 2, 2013 at 10:01 AM

    Updated Tuesday, Apr 2 at 4:47 PM

    The $80 million machine called Bertha was built at a factory in Osaka will dig a two mile tunnel under downtown Seattle to replace the Alaskan Way Viaduct.

    By Associated Press and KING 5 News

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