 | Work continues at the Freedom Tower construction site on Thursday, Jan. 24, 2008 in New York. The tall steel columns are made in Luxembourg and fabricated in Virginia before arriving in New York  click to open  |
 | A steel column is unloaded at the Freedom Tower construction site on Saturday, Nov. 10, 2007. The tall steel columns are made in Luxembourg and fabricated in Virginia before arriving in New York click to open |
 | A steel column for the Freedom Tower rises from the base of the World Trade Center site in this March 9, 2007 file photo in New York. Construction began last spring on the Freedom Tower, the planned 1,776-foot skyscraper being built to replace the fallen twin towers. The tower is the tallest and most symbolic of five office buildings planned to replace the destroyed trade center complex. A Sept. 11 memorial, transit hub and performing arts center are also planned. The tall steel columns are made in Luxembourg and fabricated in Virginia before arriving in New York click to open |
 | Ironworkers weld massive steel columns at the Freedom Tower construction site on Tuesday, Jan. 8, 2008 in New York. The tall steel columns are made in Luxembourg and fabricated in Virginia before arriving in New York click to open |
 | Construction continues at the World Trade Center site in this Aug. 14, 2007 file photo in New York. The sixth anniversary of the terrorist attacks will be marked on September 11. The tall steel columns, center, are made in Luxembourg and fabricated in Virginia before arriving in New York click to open |
 | Steel columns for the Freedom Tower rise from the base of the World Trade Center site,in this Feb. 23, 2007 file photo in New York. The 1,776-foot (533-meter) tower will be part of the redeveloped site. The tall steel columns are made in Luxembourg and fabricated in Virginia before arriving in New York click to open |
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