Originally Posted by R.Mackey
The "nanothermite" samples vary by about a factor of 10 in energy content. This nonuniformity proves it is not a "precision engineered" substance of any kind.
The top end of energy content exceeds the theoretical maximum for thermite by a factor of two, and the observed content of nanothermite by a factor of five. The substance cannot be thermite of any type. Its "contaminants" are, in fact, the dominant species.
Regardless of what it actually is, there's no evidence it was actually in the WTC to begin with, and considerable evidence against. The sampling strategy is wholly inadequate. A more thorough methodology was applied by Lioy et al., and they found no nanothermite at all. They did, however, find that a large fraction of the dust originated as paint, of numerous types.
There is absolutely no coherent explanation for why nanothermite would be in the structure in the first place. It offers no advantages, either as an explosive or an igniter, over cheaper, less troublesome, actually available ordinary technologies.
Absolutely no one has corroborated these findings, and the one person who was given a sample of the dust couldn't even match the visual description claimed by Dr. Jones.