Residues of ceramic molds for thermite welding like these, left by railway workers, can be found along tracks.
Two buckets of thermite residues left by railway workers after welding tracks.
Oh look red and gray chips.
Maybe it's not the same type of thermite as the red and gray chips found in the dust of the WTC, but it's residual thermite and it's in red and gray chips bonded together...
(thermite has chemical variances depending on type and purpose)
Things that make me go HMMMMM!
Oh look More Red and Gray Chips!
These were found in the dust of the WTC:
Looks like the same stuff to me.
Ain't that something!
"Nanoparticles can be prepared by spray drying from a solution, or in case of insoluble oxides, spray pyrolysis of solutions of suitable precursors. The composite materials can be prepared by sol-gel techniques or by conventional wet mixing and pressing.
Similar but not identical systems are nano-laminated pyrotechnic compositions, or energetic nanocomposites. In these systems, the fuel and oxidizer is not mixed as small particles, but deposited as alternating thin layers." - http://en.wikipedia.org/wiki/Nano-thermite
thermite - Types, Ignition, Safety, Military uses, Civilian uses, History
What the scientific peer-reviewed paper "Active Thermitic Material Discovered in Dust from the 9/11 World Trade Center Catastrophe" said about those energetic particles
More on thermite (One might want to check out the reference links at bottom of this link page. I found them to be very informative)
More about That Exploding Paint
5 Photos Thermite deniers hate
The newer versions of thermite
Applications of thermite