The agency is now giving away about 200 items from the 80,000-square-foot hangar. It once held more than 2,000 artifacts from the ruins, which have been distributed over the years to organizations in the United States and abroad.

 

On Tuesday, the damaged car of a PATH train that once carried commuters from New Jersey to the trade center site was lifted onto a flatbed truck by two big cranes. It was headed to the Trolley Museum of New York in Kingston, about 90 miles up the Hudson River from New York City, where it will be the centerpiece of a future Sept. 11 wing.

"When I first saw it in the hangar behind us, it felt like I was opening a tomb; it was very emotional for me, I got goose bumps and I had to hold back the tears," museum director Erik Garces said. He spent a week after 9/11 as a city transit employee digging for human remains in the smoking, fiery debris left by the two terrorist-piloted jets.

With planes roaring overhead, he stood watching PATH Train Car No. 143 rolling away — only slightly damaged by the debris of the collapsing towers that penetrated the PATH station tunnel. Of the seven cars on the train, four were crushed. The other surviving car went to the Shore Line Trolley Museum in East Haven, Connecticut.

The one leaving the hangar, bearing the marks of 3 feet of Hudson River water that flooded the tunnel, "was preserved as it was that morning," Garces said. Complete with the original 2001 ads, he said, "it's a touchstone to the past, it's more than just a relic: When something is really tactile, it brings back emotions and memories that aren't necessarily stirred by just a video or reading a passage in a magazine."

In a remote cargo section of the airport, hangar 17 was dubbed "The Tomb of the Unknowns." None of the haunting reminders of the world's worst terrorist attack were victims' personal belongings, which were returned to families if possible. Those never claimed are being held by the New York Police Department.

Archived and organized, each item in the hangar came from the heaps of rubble where more than 2,700 people took their last breaths: mangled police cars, a piece of concrete from a World Trade Center garage, an elevator motor and part of a steel beam from which workers cut out crosses and Stars of David. But perhaps the eeriest items are those from ordinary, daily life, frozen forever on 9/11: goods excavated from shops in the underground World Trade Center concourse, including clothing, costume jewelry, a cigarette display case and a sweater sale sign.

The last Port Authority remnants will be distributed to various organizations, on condition they be accessible to the public. The hangar is to be demolished sometime in the future, said Port Authority spokesman Steve Coleman.

On Tuesday, a 32-foot-tall, 36,000-pound antenna section from the north tower was hoisted onto another truck — a blackened, twisted, wire-strung hulk resembling some prehistoric dragon skeleton. It's going to the Fulton Montgomery Community College in Johnstown, New York, as part of an outdoor garden.

Draping the load strapped to the truck was a banner that read: "WTC 9/11 NEVER FORGET."