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NYC Subway Tunnel Boring Machine Breaks Through at 34th Street for 7 Train

December 22, 2009

Have a look at these pictures and amazing video of the cutting head attachment for a 1000 ton tunnel boring machine breaks through pure bedrock in Manhattan on 34th street and 11th Avenue as part of the construction for the new extension to the 7 train which will continue west from midtown and down through Chelsea on the westside, bringing subway access to a previously unaccesible area by subway. (The closest train is the ACE Line on 8th Avenue.) Construction is set to be completed by December 2013, which most likely means April 2045.

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