401468 04: Earth movers collect debries to be sifted through by fire fighters and Port Authority Police officers in order to recover remains and evidence at Ground Zero, the former site of the World Trade Center, February 22, 2002 in New York City. The debris are then sent to a landfill on Staten Island to be sifted through for the third and final time. (Photo by Getty Images)
The city is planning to search through material excavated from around the World Trade Center site for any remains of Sept. 11 victims.
If there are any possible remains found, the material will undergo testing at the city medical examiner's office.