New York City ? The pulverized remains of bodies from the World Trade Center disaster site were used by city workers to fill ruts and potholes, a city contractor says in a sworn affidavit filed Friday in Manhattan Federal Court.

Eric Beck says debris powders – known as fines – were put in a pothole-fill mixture by crews at the Fresh Kills landfill on Staten Island, N.Y., where more than 1.65 million tons of World Trade Center debris were deposited after the Sept. 11, 2001, attacks.

Eric Beck was the senior supervisor for Taylor Recycling, a private contractor hired to sift through debris trucked to Fresh Kills after the trade center attacks. Before the arrival of Taylor’s equipment at Fresh Kills in October 2001, the debris was sifted manually by workers using rakes and shovels.

Beck’s affidavit was filed by lawyers for the families of Sept. 11 victims who are suing the city in hopes of creating a formal burial place for debris that they say contains human remains.

In his first few months on the job, Beck said Taylor’s mechanical sifters found 2,000 bones per day. But Beck said he was pushed to sift the debris quickly, and that remains may have been missed.