Please see link at post 476.
also
For anyone who has recorded video or taken photos that they believe may be of aid in the investigation of the Space Shuttle Columbia accident, NASA has established a special location on the Web where Internet users may upload their media files to be reviewed by NASA.
http://www.jsc.nasa.gov/instructions.html
from the link in post 476.
Chunks like this piece of metal seem to be everywhere.
This is a hole that was made in the roof of a mobile home by a fallig piece of debris. It did not actually fall thru the roof but instead bounced up out of the hole and landed on an out building...more to follow