Inner duct installation at the lower level tail tracks of the Manhattan tunnels.  (CS179, 10-13-2019)
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/mtacc-esa/48919625538/">Inner duct installation at the lower level tail tracks of the Manhattan tunnels.  (CS179, 10-13-2019)</a>