The 408-foot spire topping One World Trade Center was installed Friday morning, with construction workers below applauding the milestone.
![](http://s1.ibtimes.com/sites/www.ibtimes.com/files/styles/v2_article_large/public/2013/05/02/one-wtc-spire-ground.jpg)
http://news.msn.com/us/wtc-tow ... -1776-feet?ocid=ansnews11
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![](http://s1.ibtimes.com/sites/www.ibtimes.com/files/styles/v2_article_large/public/2013/05/02/one-wtc-spire-ground.jpg)
http://news.msn.com/us/wtc-tow ... -1776-feet?ocid=ansnews11
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