This photo shows progress on the Second Avenue Subway as of Sunday, October 14, 2012. Blasting for the main cavern of the 72nd Street Station has concluded (though some ancillary blasting continues), ... more 
This photo shows progress on the Second Avenue Subway as of Sunday, October 14, 2012. Blasting for the main cavern of the 72nd Street Station has concluded (though some ancillary blasting continues), and waterproofing is underway. Photo: Metropolitan Transportation Authority / Patrick Cashin. less 
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Yahoo News | Photo By Metropolitan Transportation Authority / Patrick Cashin
Thu, Jun 13, 2013 5:00 PM EDT