I don't want to open another can of worms but what about spontaneous creation of thermite? It is a somewhat common event that you are taught to avoid in industrial practice. It takes place when grinding ferrous metals in the presence of aluminum (Last I checked, the towers after impact sure contained enough iron and aluminum oxide to make a stoichiometric mixture quite easily). It has actually been reported as occuring in industrial accidents. If that took place, wouldn't it account for the sphericle particles?
That is what we are investigating how the amount of spiracles formed and how they kelped forming over time.
A natural thermite reaction could be the cause if it heated enough steel or produced enough iron but where what would have caused it.
You do not usually get a thermite reaction form drywall because when you heat it to 350c it looses all of its moisture H2O and all the Available Acid compounds with the water, and puts out a white smoke-Steam as it form's anhydrite.
The concrete being high in Gypsum is the same in the same way does basically the same thing, also the concrete samples show elevated levels of Gypsum above that specified and that indicates possible sulfate attack on the concrete.
Sono Chemical reactions can cause burning aluminum in oxygen, but you have to have a chimney effect of sizable proportions.
Or a lot of noise or wave motion.
Nits discounts that.
Small stray Aluminum with oxide reactions would be minor, although some Aluminum undoubtedly oxidized, NITS discounts that it was a major factor.
They did not make the mistake of using Oxidized Aluminum as a indicator of fire temperature as did the early engineers.
Since friction would cause Aluminum to oxidize with air, and Aluminum when directly exposed to oxygen, aluminum always burns at 2800c white hot.
I have been though the NIST data a thousand times the cause of the particles is simply not in the data and the data simply does not indicate a way they could have been formed.
It is just a mystery but how about hydrogen explosions small and continuous out of site forming water from air and forcing that water though the oxide of the aluminum, do to the water traveling in pressure waves.
That is one possible cause remember all the reports of steam pipes exploding?
Now were would the hydrogen come from where could steam come from to pool under Aluminum causing Aluminum to peculate and burn?
What could make concrete like powder, here is a copy of What an Iron worker told me about the concrete in the towers.
It's interesting about the concrete. Would the sulfur make the concrete weak?
Just from working in the buildings I can tell you the concrete was always a problem as far as wedge anchor were concerned. The concrete was like dust in that place.
Sulfuric acid+Calcium Carbonate=Calcium sulfate,Carbon Dioxide Calcium sulfate is gypsum.
For those of you interested in my previous experiments, here is what I found on why the reaction that cause the burning metal.
"Calcium Thiosulfate (CaS2O3)
Calcium thiosulfate is a clear crystalline substance, with little color, a faintly sulfurous odor and near neutral pH. It reacts with free as well as combined chlorine. Calcium thiosulfate undergoes the following reactions with free chlorine (6).
CaS2O3+ 4HOCl + H2O → CaSO4+ 4HCl+ H2SO4 Calcium thiosulfate Hypochlorous acid Calcium sulfate Hydrochloric acid Sulfuric acid "
IT was the chlorine in the water that cause the reaction to sulfuric acid where that touched limestone that formed Gypsum, where it touched steel it formed the burning iron oxide compound known as pyrophoric iron .
Hydrochloric acid and concrete form other compounds harmful to metals such as Calcium chloride I believe.
Let us not forget that SO2 occurs from sulfur containing petroleum products, and from lead acid batteries and is in certain concentrations in the air. How old was the concrete and drywall now?
SO2 plus water is sulfuric acid.
This is still a work in progress an 9/11/2001 is still a point of interest in study because of what NIST Left out.
Finding possible reactions is easy, finding the evidence that they happened on 9/11/2001 is hard.
It is simply a point of interest deserving continued study not a brainless CD proposal.
Of course this is now just a working hypothesis based on experiential and observed data, there must be actual evidence to back it up, so the search goes on.
