Construction workers prepare to lower the 100 ton cutting head of a tunnel boring machine down a shaft into an assembly chamber
Construction workers prepare to lower the 100 ton cutting head of a tunnel boring machine down a shaft into an assembly chamber beneath the Chelsea neighborhood of New York on Thursday February 19 2009 Two of the tbm s will excavate twin 7 100 foot tunnels between West 25th Street and Times Square as part of the extension of the number 7 subway line The tunnels should be finished by the end of 2010 with trains running in 2013 The project which is the first subway expansion in several decades will cost 2 1 billion Richard B Levine
Size: 3370px × 5034px
Location: new york ny usa north america
Photo credit: © Richard Levine / Alamy / Afripics
License: Licensed
Model Released: No
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