"The Port Authority prioritizes the safety of the 3,500 men and women working to redevelop the 16-acre World Trade Center site every day. These men and women worked shifts 24 hours a day for a total of more than 31 million man-hours since 2006 when the PA World Trade Center Construction assumed responsibility for the site. The Port Authority has dedicated 24/7 safety staff at the World Trade Center site. We take every incident seriously, review circumstances thoroughly, and deliver appropriate remedial action. We're proud of what's been accomplished at the World Trade Center, and we stand by our record, redefining safety procedures and standards, which are being adopted throughout the city and beyond."