The Clinton Herald, Clinton, Iowa

National News

May 9, 2014

Scientists still working to ID victims from 9/11

NEW YORK — Thousands of vacuum-sealed plastic pouches filled with bits of bone rest in a Manhattan laboratory. These are the last unidentified fragments of the people who died in the World Trade Center on Sept. 11, 2001.

On Saturday, the 7,930 pouches are to be moved in a solemn procession from the city medical examiner's office to the new trade center site. They will be kept in a bedrock repository 70 feet underground in the new Sept. 11 Memorial Museum that opens May 21.

The remains will be accessible only to families of the dead and to the forensic scientists who are still trying to match the bone slivers to DNA from the more than 1,000 victims who never came home and have never been identified.

"Our commitment to return the remains to the families is as great today as it was in 2001," said Mark Desire, who oversees the four-member World Trade Center team in the city's Office of the Chief Medical Examiner.

The death toll stemming from the attacks at the World Trade Center stands at 2,753. Of those, 1,115 victims, or 41 percent, have not been identified through a DNA match to items provided by families — toothbrushes, combs, clothing or swabs from relatives.

With ever-advancing technology yielding results that were impossible a dozen years ago, the unique genetic code gleaned from the bits of bone is the only hope for families waiting for anything tangible to officially confirm what they already know: Their loved one is dead.

In some cases, scientists have gone back to the same bone fragment 10 or 15 times, using new technology to attempt to extract DNA diminished by fire, sunlight, bacteria and even the jet fuel that poured through the towers.

The painstaking process involves pulverizing the bone fragments, adding a special chemical to the powder and then spinning it all in a centrifuge to break open the bone cells so DNA can be extracted. Then comes the last, critical step — looking to match it to an item with the victim's DNA provided by families — part of the medical examiner's collection of 17,000 contributions.

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