Could you tell me exactly why the pressure pulse from the massive fuel-air explosion from the impact of UA 175(at WTC2) could not be responsible forthe observed phenomena?(at WTC1) SnowCrash
===================================
1) a pressure pulse will push things, not pull.
2) the classic air-fuel explosion producing a vacuum over a wide area (and subsequent implosion) typically requires dispersal of the fuel in a mist over a large area prior to ignition, and that is not what occurred.
In any case, a classic fuel-air explosion would not account for what we see, since the effect is isolated to a few specific regions. The effect on clouds of a shock wave propagating in all directions from its source should make that point clear:
3) a flash immediately precedes ejection of black smoke from a new area:
4) the smoke peeling upwards in regions above and surrounding the smoke puffs remains unaffected, and
5) a flame blows out a window on the opposite face, while the smoke peeling upwards on that side remains unaffected:
6) the jet-fuel explosion has barely had a chance to expand before these things occur:
Conclusion: the smoke is not pulled from the windows by the explosion next door, but pushed from within.
2) pre-collapse ejection of a "large piece of debris" at "an extremely high velocity."
The video shot from the WTC plaza captured an intriguing event at 9:37:04 a.m. A jet of air, dust, and a large piece of debris was ejected from a window, 77-355, on the 77th floor at an extremely high velocity. Longer distance videos show that puffs of smoke and/or dust appeared simultaneously on the east face from several open windows near the center of the 78th floor and from open windows on the north side of the 79th floor. Interestingly, the smoke flow from the windows on the west sides of the 79th and 80th floors, which had decreased markedly by this time, did not increase. Within 14s of this release, a large fire either grew or became visible near the center of the east face on the 82nd floor.
A long distance video shot from the south showed that fire and smoke were pushed from multiple locations on the south face at the same time the strong jet occurred on the 77th floor of the east face.
-NIST NCSTAR 1-5A, WTC Investigation (p. 346)
September 2010 Update, FOI release of video by NIST to the International Center for 911 Studies:
3) a pre-collapse cascade of brightly glowing molten metal
At 9:57:21 a.m., shortly after another pressure pulse, the bright light reappeared at the top window, 80-255, on the 80th floor from which the flow of molten metal had been observed earlier. Almost immediately, it appeared to jump one window to the east, i.e., to window 80-256. Five seconds later a light flow of molten metal began pouring out of window 80-256. The flow of material from this window would now be nearly continuous until the tower collapsed. At 9:57:32 a.m. there was a fairly intense pressure pulse within the tower. The flow rate of the molten metal
increased dramatically at this time.
(NIST NCSTAR1-5A_chap_9-AppxC)
"Left: Thermal Imagery of the progression of molten steel
hotspots from September 18 to September 25 "
GeoNews, October, 2001 http://web.gc.cuny.edu/ees/october2001.pdf
Red Hot Debris. The removal of debris from the collapsed area requires the safe lifting and maneuvering of very heavy steel beams, often twisted and tangled from the force of the collapse.
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. http://www.liro.com/lironews.pdf
7) almost resistance-free rate of explosive collapse (Sth & Nth)
8) almost resistance-free rate of structural 'implosion' (bldg 7)
9) smoke billowing profusely from both ends of rapidly ejected neatly-cut column sections during collapse
10) explosions evident in Nth twr during collapse of the Sth,
explosions evident in Nth twr at Sth tower impact:
11) jubilant explosives-tainted men with "maps linking them to the bombing plot"
(Bergen Record- September 12, NYT-Sept 14, Haaretz, Sept-19, etc)
The intense fire in the northeast corner opening of the 81st floor is still present.
An unusual flame is visible within this fire. In the upper photograph in Figure 9-44
a very
bright white
flame, as opposed to the typical yellow
or orange surrounding flames, which is generating
a plume of white smoke, stands out. The intensity of this flame is considerably
brighter than normal flames. It was easily indentified in numerous photographs
and videos shot from long distances at which the surrounding "normal" flames
were not visible. The brightness of the flame, along with the white smoke,
suggests that some type of metal is burning. Aluminum will burn, but in normal
fires it usually melts instead because the metal surface is protected by an oxide
layer that must be breeched before ignition can take place. Aluminum oxide melts at
high temperatures (2054C) that are not typically reached in normal fires. There were
limited quantities of other metals on the aircraft that might also burn. Whatever
the metal, the ignition of a metal fire is an indication of the significant heating
of debris that took place in the northeast corner of the 81st floor due to the prolonged
intense burning in this area following the aircraft impact.
NISTNCSTAR1-5A_chapter_9_AppxC - p. 344. (pdf p.48 - 55Mb)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
MOLTEN IRON
Thermite/thermate is a kind of
(1) metal fire that produces
(2) a plume of white/grey smoke and
(3) a stream of molten iron.
