"Finally, the scientists did not broach the issue of whether the dust showed evidence of
explosive residues. Their report does not appear to have sufficient detail to use it as a basis for drawing any conclusions about the question of explosives. All their disclosures of the dust composition are partial, addressing questions about the levels of heavy metals and toxic hydrocarbons, but failing to provide even complete compositional analysis of elements." -
911research link
Here's a
link to Lioy's paper. I reached the same conclusions as 911research this time around. Furthermore when Nist admits to not searching for
explosives it's easy to imagine Lioy et al not performing a full (or any) search for
explosives.