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Cutter Head

(CBS4) The "Cutter Head" of the Port Tunnel Boring Machine is raised into the air by a specail crane before being lowered and attached to the tunnel boring machine which will carve the twin tunnels connecting Watson Island and Dodge Island.

Critical Day In $1B Port Of Miami Tunnel Project

Construction of the new $1 billion Port of Miami tunnel took a giant leap forward Thursday afternoon when a critical piece of the giant Tunnel Boring Machine was raised into the air and then lowered into the ground.

CBS4–09/01/2011

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