On May 10, 2013, workers attached the final piece of the spire to the top of the World Trade Center, bringing the tower to 1,776 feet. Scott Pelley took a trip to the top of the building ahead of the ... more 
On May 10, 2013, workers attached the final piece of the spire to the top of the World Trade Center, bringing the tower to 1,776 feet. Scott Pelley took a trip to the top of the building ahead of the installation and sat down with two officials overseeing the project to discuss the milestone. less 
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Thu, May 16, 2013 11:40 PM EDT