It appears, putting this together with the satellite photos, that the Iraqi's were busy transporting these materials out of Al Qa Qaa, but were not quite through with the job, before cutting out ahead of our advancement.
On CNN Headline News, Kay just went over the satellite photos as well, and it seems, coming to this conclusion. He asserted there just weren't enough troops to cover this compound, but stressed how huge it was -- roughly the size of Manhattan.
Kay pointed out that these photos of the evacuation of bunkers represented organized action, not looting.
But there were sure enough troops to nail a convoy of trucks trying to leave the compound!