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File:SASPhase1TBMBreakthrough.jpg

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Description
English: Workers completed tunneling for the first phase of the Second Avenue Subway on Sept. 22, 2011, when the project's tunnel boring machine reached the BMT 63rd Street Line, breaking into the existing subway system. The 485-ton, 450-foot-long TBM used a 22-foot diameter cutterhead to mine 7,789 linear feet in two tunnels, averaging approximately 60 linear feet a day.
Date Taken on 22 September 2011, 13:29:34
Source Flickr: SAS_7603
Author Patrick Cashin, Metropolitan Transportation Authority of the State of New York
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(Reusing this file)
This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 24 September 2011, 22:17 by Train2104. On that date, it was confirmed to be licensed under the terms of the license indicated.
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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22 September 2011

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Date/TimeThumbnailDimensionsUserComment
current22:18, 24 September 2011Thumbnail for version as of 22:18, 24 September 20112,400 × 1,594 (3.83 MB)Flickr upload botUploaded from http://flickr.com/photo/61135621@N03/6173502140 using Flickr upload bot

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