A newspaper article and 911myths with multiple eyewitness reports of breaches. The 911 myths page also references the NIST report.
http://www.911myths.com/html/accounts_of_explosions.html
http://www.911myths.com/html/jet_fuel.html Oh, look, multiple people throughout the building describing the smell of jet fuel. Unless there was some way the jet fuel could've gotten down to those points besides the elevator shafts? Because if those paths let fuel (even vaporized fuel)
down, that means they were also paths to let oxygen
up.
We are talking about
the hypothesis in the letter sent to Ron.
"The fire is in a building with a central core of
elevator shafts that act like a chimney efficiently providing the oxygen needed for combustion. The air and other gasses are
flowing with hurricane force speeds.
The iron has a
thin layer of rust flakes that can be easily removed by sticky tape.The iron is heated red hot or hotter and subjected to
hurricane force blast furnace like wind. The iron flakes are liberated as small particles and some iron is vaporized. Like drops of water, the iron flakes form molten spheres that solidify and the fume also condenses into spheres, the most efficient geometrical form."
But could there be "hurricane force blast furnace like winds" up the elevator shafts?
In the links you posted I found one more reference to elevator doors being blown off. But the exterior windows were intact so there was no source of air to be sucked into the elevator shafts on that floor. The guy on the 82nd floor said they busted out windows to get air but other than that the windows below the impact zone were intact. The same is true for any other shafts that were breached, no external air supply.
"The explosion on the
86th floor seemed to come from the inside out, rather than the outside in,'' said Mr. Gartenberg, 35, of Manhattan. "That's why the core of the building is as damaged as it is. The fire door is blocked. It either closed from the force of the explosion or as a fire precaution.
The elevators are completely blown out.''
Mr. Gartenberg said that the interior glass doors were blown out, but the external windows were intact.
http://www.mishalov.com/wtc_northtower.html
The two shafts from the lobby to the impact zone, the one on the 82nd floor and possibly the freight elevator shaft from the basement were the only ones [yet documented] with an external air source below the impact zone and could have acted as chimneys to any great extent.
There was nothing to burn in the elevator shafts so the "
thin layer of rust flakes that can be easily removed by sticky tape" could only be effected in the shaft from floor 82 to the impact zone, the impact zone and above.
There is no data to support the hypothesis that iron spheres could be created from rust on steel framework. If they were "liberated" by the updraft and melted in the flames, then they would be carried away in the updraft from the flames with the rest of the particulate matter that make up the smoke.