Updated

Almost 13 years after two hijacked planes slammed into the World Trade Center towers, thousands of vacuum-sealed plastic pouches with bits of bone rest in a laboratory on Manhattan's East Side.

These are the last fragments of those who died on Sept. 11, 2001.

On Saturday, the nearly 8,000 pouches are to be moved to the new trade center site. They will be kept in a repository 70 feet underground behind the new Sept. 11 museum that opens May 21.

With new technology yielding results impossible a dozen years ago, forensic scientists are still desperately trying to match the bone with DNA from victims who have never been identified. Of the 2,753 people reported missing at the trade center, 1,115 victims have still not been identified through DNA.