Workers found three bone fragments in a second manhole at the World Trade Center site, close to where about 200 bones had already been recovered, officials said.
The bone pieces, 1 to 2 inches long, were recovered Saturday along a service road on the site's western edge, the medical examiner's office said Monday.
Officials have said they are searching 12 manholes and other underground areas along the road that they said were missed during the initial recovery of body parts after the Sept. 11, 2001, terrorist attacks.
More than 40 percent of the trade center victims have never been identified.
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