that they are making quite the leap on the thermite issue. In buildings the size and age of the Trade Center, I would expect both iron-oxide and aluminum to be very common, yet they still only found trace amounts in the forms that potentially could prove their point. They describe that the thermite, in order to match the "chips" they found would have had to have been essentially emplaced as a paint - in thin layers. What I could not find them showing is that any of the "thermite" chips show any sign of actual combustion. It is far more likely that the chips were flecks of paint from coated, iron-alloy beams that were pulverized during the collapse of the building.

The iron-rich spheres appear to me to be specular hematite, which is a fairly common form of rust.

If thermite explosives were used to bring down the buildings, the chemical signatures would be enormous and much, much more obvious.

Just my .02