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Seattle Tunnel Partners Successfully Lower the Repaired “Big Bertha” Tunneling Machine

August 26, 2015 - in Construction, Corporate, Transportation

SEATTLE, Aug. 25, 2015—Seattle Tunnel Partners and crane crews from Mammoet have successfully lowered the 2,000-ton front end of the SR 99 tunneling machine to a platform at the bottom of the access pit. Crews will now use the crane to fine-tune the position…