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Originally posted by bsbray11
A case could be built for each of those but I would bet anything that you would contest each one for petty and illogical reasons, saying "this doesn't mean that", which is a lame argument because it could easily go either way even if you offered alternatives that made any sense, and yet rather than be on the fence, you would still firmly state the case to have been impossible and/or mock and laugh at the idea. Why? I bet you think we're still in the 1960's as far as nuke tech goes. And I bet you think if we weren't, you would know about it, as if someone has an obligation to keep you informed of classified weapons developments.
Originally posted by Zaphod58
Because until the 757/767 EVERY plane that flew had DU counterweights. In fact most people STILL think that the 757/767 have DU in them. Even though it's been shown that they don't. And I'm talking about people that know aviation, not just every day people.
Originally posted by Griff
Good point. But, who were these people and what were their qualifications? Just asking so we know the whole story of who the government had "declare" these things. Like the "air is safe" declaration that the EPA was forced to make.
Originally posted by Zaphod58
I know that there are things out there that I know nothing about, and are classified. But since the 1940s, until the 1980s nuclear weapons were built in largely the same way,
Show me the radiation poisonings from ground zero, and I don't mean cancer months later. Show me the EMP that trashed electronics all around Ground Zero, and I'll admit that you have a case for a mini nuke.
I don't have an alternative to your mini nuke theory because I don't know enough about buildings to explain something, but I do know weapons, and I have studied nuclear weapons.
Originally posted by Zaphod58
I know that there are things out there that I know nothing about, and are classified.
Originally posted by Vinadetta
I have no idea how you can believe this and still support the offical story?
Originally posted by Vinadetta
Show me the radiation poisonings from ground zero, and I don't mean cancer months later. Show me the EMP that trashed electronics all around Ground Zero, and I'll admit that you have a case for a mini nuke. You haven't, and all I ever hear is "covert military explosives" and "the military can do anything with what they have."
Originally posted by Zaphod58
That's why I said every plane UNTIL the 757/767. Meaning that until they came along DU was used. However many people didn't realize that the 757/767 used Tungsten instead of DU.
Originally posted by Zaphod58
I realize this, and I'm not saying they didn't use Tungsten in the 757/767, but most people didn't bother to look to see what they used, because they ASSUMED that it was DU, because they've been using it for awhile prior to that.
Originally posted by Sunsetspawn
Okay, bad jokes aside, NO ONE has addressed the molten steel pouring out of the building in the video on the first page.
Originally posted by Sunsetspawn
Originally posted by Vinadetta
Show me the radiation poisonings from ground zero, and I don't mean cancer months later. Show me the EMP that trashed electronics all around Ground Zero, and I'll admit that you have a case for a mini nuke. You haven't, and all I ever hear is "covert military explosives" and "the military can do anything with what they have."
Please stop gunning down the straw men.
11. Why do some photographs show a yellow stream of molten metal pouring down the side of WTC2 that NIST claims was aluminum from the crashed plane although aluminum burns with a white glow?
NIST reported (NCSTAR 1-5A) that just before 9:52 a.m., a bright spot appeared at the top of a window on the 80th floor of WTC 2, four windows removed from the east edge on the north face, followed by the flow of a glowing liquid. This flow lasted approximately four seconds before subsiding. Many such liquid flows were observed from near this location in the seven minutes leading up to the collapse of this tower. There is no evidence of similar molten liquid pouring out from another location in WTC 2 or from anywhere within WTC 1.
Photographs, and NIST simulations of the aircraft impact, show large piles of debris in the 80th and 81st floors of WTC 2 near the site where the glowing liquid eventually appeared. Much of this debris came from the aircraft itself and from the office furnishings that the aircraft pushed forward as it tunneled to this far end of the building. Large fires developed on these piles shortly after the aircraft impact and continued to burn in the area until the tower collapsed.
NIST concluded that the source of the molten material was aluminum alloys from the aircraft, since these are known to melt between 475 degrees Celsius and 640 degrees Celsius (depending on the particular alloy), well below the expected temperatures (about 1,000 degrees Celsius) in the vicinity of the fires. Aluminum is not expected to ignite at normal fire temperatures and there is no visual indication that the material flowing from the tower was burning.
Pure liquid aluminum would be expected to appear silvery. However, the molten metal was very likely mixed with large amounts of hot, partially burned, solid organic materials (e.g., furniture, carpets, partitions and computers) which can display an orange glow, much like logs burning in a fireplace. The apparent color also would have been affected by slag formation on the surface.
One of the glaringly OBVIOUS pieces of evidence is the place the flow is coming from. It just happens to be where the airliner crashed to a halt. You can tell by the way the perimeter columns look. They're bowed out like a catcher's mitt
...
The flow is not steel because the structural steel would fail well below the melting temperature. The flow is likely to be a mixture of aluminum, aluminum oxides, molten glass and coals of whatever trash the aluminum flowed over as it reached the open window. Such a flow would appear orange and cool to a dark color.
...
Finally, an unexplained cascade of molten metal from the northeast corner of the south tower just before it collapsed might have started when a floor carrying pieces of one of the jetliners began to sag and fail. The metal was probably molten aluminum from the plane and could have come through the top of an 80th floor window as the floor above gave way, Dr. Pitts said.
"That's probably why it poured out — simply because it was dumped there," Dr. Pitts said.
...
NIST pg 43 Section H.9 App H Vol 4
Starting at around 9:52 a.m. a molten material began to pour from the top of the window 80-256 on the North face of WTC 2. The material appears intermittently until the tower collapses at 9:58:59. The observation of piles of debris in this area combined with the melting point behaviors of the primary alloys used in a Boeing 767 suggest that the material is molten aluminum derived from aircraft debris located on floor 81.
...
Close up video and photographs of the area where the material is pouring from have been examined and show that it is falling from near the top of window 80-256. The most likely explanation for this observation is that the material had originally pooled on the floor above, that is 81, and that it was allowed to pour out of the building when this floor either pulled away from the outer spandrel or sank down to the point where the window was exposed. The fact that the material appears intermittently over a several minute period suggests that the floor was giving way bit by bit
...
The composition of the flowing material can only be the subject of speculation, but its behavior is consistent with it being molten aluminum. Visual evidence suggest that a significant wreckage from the plane passed thought the building and came to rest in the northeast corner of the tower in the vicinity of the location where the material is observed.
Much of the structure of the Boeing 767 is formed from two aluminum alloys that have been identified as 2024 and 7075 closely related alloys. These alloys do not melt at a single temp, but melt over a temp range from the lower end of the range to the upper as the fraction of the liquid increases. The Aluminum association handbook lists the melting point as roughly 500C to 638 C and 475 C to 635C for alloys 2024 and 7075 respectively. These temperatures are well below those characteristic of fully developed fires (ca 1000C ) and any aluminum present is likely to be at least partially melted by the intense fires in the area.
Assuming that the flow would be molten aluminum from the airliner and the color of molten aluminum is silver then why is the flow orange?
The color of pure molten aluminum is silver, It has an emissivity of .12. Steel has an emissivity of .4 and appears orange in the temperature range of molten aluminum.
The emissivity of aluminum oxide is .44 and also appears orange in the melting temperature range of molten aluminum.
The emissivity of plate glass is .937 It begins to soften at 1000 F and flows around 1350 F. Silica has an emissivity of .8
Copper oxide also has an emissivity of .8. however I will assume that their effect is negligible.
Aluminum oxidizes readily in the foundry under ideal melting conditions. Large surface area relative to thickness, turbulence, the presence of water or oil greatly increases the oxidation of aluminum. A jet airliner is made of thin aluminum sheet and most probably suffered considerable oxidation especially in contact with an open flame and being in contact with jet fuel. If you don't believe this, try melting a few soda cans over coals or open flame. If you are lucky you will end up with only 50% aluminum oxide. However, the cans may completely burn up.
The specific gravity of aluminum is 2.7. The specific gravity of aluminum oxide (Al2O3-3H2O) is 2.42 the specific gravity of Si = 2.40 and Glass is 2.65 these are all very similar and likely to be entrained in a molten aluminum flow. Don't believe it? lightly stir the dross into molten aluminum. The surface tension is so high is is almost impossible to separate them.
THEREFORE assuming that the flow consist of molten aluminum and considerable oxides, and assuming that the windows in the trade center were plate glass and also in a plastic state and that they were also likely entrained in the molten aluminum. I would expect the flow to appear to be orange in color. Especially since both the entrained materials have emissivities equal to or more than twice that of iron.
Also since dross cools to a gray color and glass with impurities also turns dark. I would expect that the flow would darken upon cooling.
I would also suggest that not only is the photo possible, but entirely likely.
Summary: The flow is not steel because the structural steel would fail well below the melting temperature. The flow is likely to be a mixture of aluminum, aluminum oxides, molten glass and coals of whatever trash the aluminum flowed over as it reached the open window. Such a flow would appear orange and cool to a dark color.
Stephen D. Chastain
Originally posted by Zep Tepi
Aluminum oxidizes readily in the foundry under ideal melting conditions.
[...]
The specific gravity of aluminum is 2.7. The specific gravity of aluminum oxide (Al2O3-3H2O) is 2.42 the specific gravity of Si = 2.40 and Glass is 2.65 these are all very similar and likely to be entrained in a molten aluminum flow.
Originally posted by mirageofdeceit
Hasn't it been shown that thermate was used???
Originally posted by bsbray11
Is he assuming foundry temperatures and pressures were present?
Aluminum oxidizes readily in the foundry under ideal melting conditions. Large surface area relative to thickness, turbulence, the presence of water or oil greatly increases the oxidation of aluminum.
Originally posted by bsbray11
This reminds me of HowardRoark saying the sulfidated steel was the result of drywall burning next to the steel, when sulfidation itself requires temperatures well beyond the range of office fires.