Ground reporter / Unknown

It's a very good question, Peter, and I have asked some people who've been doing some of the rescue and recovery work this morning.

If you look behind me, you can see the very remains, the skeletal remains of the World Trade Center.

And one volunteer, Robert Gerlinski, explained to me the reason there's so little rubble is that all of it simply fell down.

into the ground and was pulverized evaporated now i should say though for the last several hours there's been a steady stream of dump trucks and other very large vehicles carrying out debris according to a new york times article published five months after the attacks quote an unknown number of steel columns has been sent off to mills as far away as asia without ever having been examined or saved