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. |
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| Date | |||
| Source | Flickr: SAS_7603 | ||
| Author | Patrick Cashin, Metropolitan Transportation Authority of the State of New York | ||
| Permission (Reusing this file) |
  This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:18, 24 September 2011 | | 2,400 × 1,594 (3.83 MB) | Flickr upload bot | Uploaded from http://flickr.com/photo/61135621@N03/6173502140 using Flickr upload bot |
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