For the millionth time, Steven Jones has done experiments to rule that out!
#131 - NASA thermal images show only 1400°F, not 2800°F
These were the temperatures at the surface. Underneath, the temperatures would have been higher.
#131 Part Deux - Abundant aluminium in debris to melt at 1200°F
Some of it was definitely iron:
Richard Gage features this in his presentation. Considering Chris Mohr claims to be 'respectfully rebutting' Gage, he sure does ignore alot of the evidence he presents.
#132 - Claw Picture
Better picture:
"Some beams pulled from the wreckage are still red hot more than 7 weeks after the attack, and it is suspected that temperatures beneath the debris pile are well in excess of 1,000°F." ~ LiRo newsletter, November 2001
Possible video:
http://www.youtube.com/watch?v=8wwbOUR-sxI
John Gross' denial and witnesses:
http://www.youtube.com/watch?v=3SLIzSCt_cg
Leslie Robertson:
http://www.youtube.com/watch?v=rjmHqES_lto
#133 - Regular fires can burn for months
As Andrea Dreger writes:
(2) The persistence of hot-spots at the same locations for days and weeks#136 - #137 - Vincent Palmieri testimony
If you compare the 25 thermal images by EarthData that are published on their website you can see that the area covered by hot spots becomes smaller over time, but the general location of the hot spots does not change. You have hot spots at the same places for weeks. This seems to be inconsistent with the assumption that the hot spots were due exclusively to underground fires. Any fire at a given location will have consumed all burnable matter at some point and will stop burning at this given spot. Even if you consider that fires might have burnt at different levels at different times under the surface at any given spot, and that a single spot that seems small on the image in fact covered a relatively large area it seems impossible to explain how the heat persisted for weeks at the same spots due solely to burning fires.
No planer logic. The fact that some firefighters etc. didn't witness molten metal or extremely high temperatures doesn't refute the fact that others did!
#138 - Steam Explosions
It turns out they were concerned about such a thing...
Another danger involved the high temperature of twisted steel pulled from the rubble. Underground fires burned at temperatures up to 2,000 degrees. As the huge cranes pulled steel beams from the pile, safety experts worried about the effects of the extreme heat on the crane rigging and the hazards of contact with the hot steel. And they were concerned that applying water to cool the steel could cause a steam explosion that would propel nearby objects with deadly force. Special expertise was needed. OSHA called in structural engineers from its national office to assess the situation. They recommended a special handling procedure, including the use of specialized rigging and instruments to reduce the hazards.#146 - Fly Ash
http://www.osha.gov/Publications/WTC/dangerous_worksite.html
Typical Concrete Mixture [Source]:
Coarse Aggregate: 1089 kg/m³The RJ Lee report estimates that iron spheres made up 5.87% of the World Trade Center dust. The fly ash from pulverized concrete theory doesn't explain the abundance of the iron spheres.
Fine Aggregate: 747 kg/m³
Portland Cement: 251 kg/m³
Fly Ash: 84 kg/m³
Total: 2171 kg/m³
Fly Ash, % of cementious: 25%
Fly Ash, % of concrete mix: 84/2171 = 3.87%
Iron Oxide, % of Fly Ash: ~10%
Iron Oxide from Fly Ash, % of Concrete: ~10% of 3.87% = ~0.4%
Concrete, % of WTC dust [Source]: ~25%
Iron Oxide from Fly Ash in Concrete, % of WTC dust: ~0.4% of ~25% = ~0.1%
Spheres in fly ash (cenospheres) are hollow and predominantly alumina and silica. Iron oxide typically makes up only about 5-10% of fly ash used in cement. While the WTC microspheres also contain aluminium and silicon, and while we also find silicon-rich spheres, iron-rich spheres are the most common. Fly ash may be the source of the alumino-silicates also abundant in the WTC dust, but that doesn't explain how they were vapourized to a 'Swiss Cheese' appearance, something which requires temperatures in excess of 5000°F!
Also in the dust are relatively low-oxygen iron microspheres:
Many of the microspheres also contain sulfur:
The RJ Lee report also provides a micrograph and XEDS data for iron-rich spheres observed in the WTC dust; for example, their figure 21 shows an “SEM image and EDS of spherical iron particle.” We likewise observe high-iron, relatively low oxygen spheres, which we find are unlike spheres gathered from cutting structural steel with an oxyacetylene torch
http://www.journalof911studies.com/articles/WTCHighTemp2.pdf
I can't find any references for the presence of sulfur in fly ash. Also, some of the iron microspheres are hollow with sulfur on the inside:
XEDS spectrum for the largest metal-rich spherule found in sample 2. K and L lines for noted elements are labeled after the element symbol. Elemental contents in atomic percent are approximately: Fe (65), O (18), Al (11), S (4), Cu (0.6), Mn (0.6), Ni (0.4); the small C peak is likely from the carbon conductive tab used to hold the sample. The Fe-S-Al-O signature is striking, nothing like the signature of structural steel. Note also: Sulfur peak without a calcium peak, so the sulfur is not from calcium-sulfate contamination (gypsum).
http://www.journalof911studies.com/articles/WTCHighTemp2.pdf
Some of these microspheres are hollow, and Dr. Jones has determined that the inside surface of these spheres contain sulfur. This is consistent with a molten droplet containing some gaseous sulfur. The physics of this situation is the same as for bubbles. The surface tension and the internal gas pressure cause the radius of the bubble to adjust to balance these two forces.Steven Jones tested a sample of concrete for iron microspheres and found none:
http://911blogger.com/news/2007-06-20/journal-911-studies-some-physical-chemistry-aspects-thermite-thermate-iron-aluminum-rich-microspheres
PS -- some time ago, we crushed a concrete sample obtained from the WTC rubble, used magnetic concentration, and looked for iron-rich spheres. There were NONE found.Any ambiguity there may have been regarding the iron microspheres has now been eliminated thanks to the discovery of active thermitic material. The spheres in the WTC dust are identical to spheres produced during the ignition of commercial thermite and the ignition of the red-grey chips.
http://forums.randi.org/showpost.php?p=3279843&postcount=115
#146 - #155 - Eutectic Steel/Thermite Cutter BS
See John Coles videos:
The Mysterious Eutectic Steel
The Great Thermate Debate
Eliminate the Impossible
#158 - DSC of red chip ignition doesn't match documented nanothermite ignition
Neils Harrit: "IT IS BETTER - FASTER."
#166 - It's paint!
*Facepalm*