Another Day at The Office

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New York Mayor Michael Bloomberg and a group of city officials, (bottom right), watch as the cutter head of a tunnel boring machine is lifted by crane before being lowered into an underground assembly chamber beneath 11th Avenue at 25th Street for use in the Number 7 subway line extension project Thursday, Feb. 19, 2009 in New York. The cutter head, 22 feet in diameter and weighing 100 tons, is the first piece of two massive tunnel boring machines that will slice through Manhattan bedrock as they bore underneath 11th Avenue from 25th Street to 41st Street, and then east to the existing Number 7 line’s terminus at Times Square.

Link to an amazing collection of work pics

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