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originally posted by: skyeagle409
a reply to: PublicOpinion
Well... The abundance of “spherical particles of iron and silicates” could've added proof to his theory but that was never the intention. It's pretty simple: the Toldya (lol) has to remain invisible evidence-wise to match the Nist-report equivalently.
The spherical particles are the result of welding operations during construction and during the clean-up process as crews used high temp wands and torches to cut steel columns.
The silicates you are speaking of are common and can also be found in fly ash at power stations.
it is worth noting that fly ash and partially combusted products can occur in trace concentrations in ordinary building dusts, but not in the concentrations observed in WTC Dust.
Ha! And now I caught a liar in his cave.
RJ LeeGroup, Inc. denied? They must be some lousy truthers then?
• Particles of materials that had been modified by exposure to high temperature, such as spherical particles of iron and silicates, are common in WTC Dust because of the fire that accompanied the WTC Event, but are not common in “normal” interior office dust.
In addition to the vesicular carbon components, the high heat exposure of the WTC Dust has also created other morphologically specific varieties of particulate matter including spherical metallic, vesicular siliceous and spherical fly ash components. These types of particles are classic examples of high temperature or combustion by-products and are generally absent in typical office dust.
For example, lead peaks from the surface of mineral wool were identified by XPS. The high-resolution, narrow-range XPS scan (Figure 25) led to the identification of two lead peaks representing lead oxide or lead sulfate. The presence of lead oxides on the surface of mineral wool indicates the exposure of high temperatures at which lead would have undergone vaporization, oxidation, and condensation on the surface of mineral wool.
Who on Ceres would be concerned about your anti-truther-rant anyway?
Must have been the first office fire with temperatures at roughly 1700°C then. Another novelty, again! Awesome, innit?
Now, please show me how and why Dr. Richard J. Lee should be connected to this "truth-movement" you keep mocking constantly. You are far from discussing this topic and just keep spitting lies, but thanks for adding more proof to my point.
From the many videos and picture you have posted here, how can we tell the difference between a "hoaxed" one and a real one? That is, how can we tell when you are deceiving and when you are being honest?
It should be no mystery as to why, expesially since I have been catching Truthers posting hoaxed and bogus videos and photos while posting disinformation on a regular basis.
At no time did temperatures reach the melting point of steel. This is what Truthers claimed was evidence of thermite at ground zero.
Thermite is just another theory until we have some evidence to support it, but that could explain those high temperatures. Indeed. And all the hate with regards to that theory is noteworthy as well.
originally posted by: PublicOpinion
a reply to: Pilgrum
We are not talking about fly ash here, even if you might have a solid point. We are talking about high concentrations of particles which could not be explained by fly ash.
• Particles of materials that had been modified by exposure to high temperature, such as spherical particles of iron and silicates, are common in WTC Dust because of the fire that accompanied the WTC Event, but are not common in “normal” interior office dust.
911research.wtc7.net...
Take a look into this study, one could even find thin layers of vaporized lead on the dust...
2.5 Summary
The differences within the WTC Dust and typical background dusts include the fineness and evidence of heat, the size and concentration of the chrysotile, and the length and concentration of the mineral wool and other Damage Assessment WTC Dust Signature Study: Composition and Morphology 130 Liberty Street Property December 2003 Confidential 20 fibers, as well as the frequency of occurrence of spherical particles produced by fire and heat, char and soot, and other building products. (page 19/20)
4.0 Statistical Analysis
[...]
Class A particles are common WTC Dust Markers and Class C particles are common Background Building dust particles. The statistical analysis indicates that the dust in the below ceiling space in the gash is different from that observed in Background Buildings. The material collected in the gash is consistent with building materials derived from the destruction of the WTC; the carbon-rich particulate is abundant in typical office buildings. The data clearly shows statistically significant differences with the mean values in the two classes of particles, hence the WTC Dust can be distinguished from Background Building dust. (page 23)
Those experiments were televised.
ARCHITECT Magazine
The Magzine of the American Institute of Architects
All of Gage’s so-called evidence has been rebutted in peer-reviewed papers, by the Federal Emergency Management Agency, by the National Institute for Standards and Technology, by the American Society of Civil Engineers, by the 9/11 Commission Report, and, perhaps most memorably, by the 110-year-old engineering journal Popular Mechanics.
Architects Shy From Truther 9/11 Conspiracy Theory
Architects didn't show up for a 9/11-architecture-conspiracy documentary screening—and the AIA doesn't want its name associated with Trutherism.
breakfornews.com...
Steven Jones Debunked
Letter to the Editor
April 09, 2006
I find Professor Jones' thesis that planted explosives (rather than fire from the planes) caused the collapse of the Towers, very unreliable.
Before one (especially students) supports such a conspiracy theory, they should investigate all details of the theory. To me a practicing structural engineer of 57 continuous years (1941-1998), Professor Jones' presentations are very disturbing.
D. Allan Firmage
www.debunking911.com...
originally posted by: skyeagle409
a reply to: Flatcoat
Do youi deny that 175 pounds of thermite failed to destroy that steel beam?
Yet, who... ach forget about it. You don't care about science or how should I take this? A thin layer of vaporised and condensed lead doesn't imply temperatures above 1700°C? Wrong, period. Thermite is just another theory until we have some evidence to support it, but that could explain those high temperatures. Indeed. And all the hate with regards to that theory is noteworthy as well.
Yeah I know... I like the Toldya as well, how can we spin this right again? Hmm... Dr. Richard J. Lee and his team were dumb enough to search for probes in the midst of the deconstruction site and New York was covered with fly ash that day, probably due to pre-collapse fires. That should do it.
Found some irony iron? Keep it, that one was weakened by fire anyway.
Debunked: Iron Microspheres in 9/11 WTC Dust as Evidence for Thermite
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. …
The formation of iron and other type spheres at temperatures obtainable by the combustion of petroleum or coal based fuels is not a new or unique process. These spheres are the same as iron and alumino-silicate spheres in the well-studied fly ash formed from contaminants in coal as it is burned in furnaces. – Rich Lee"
The answer to the mystery of the microspheres - "Iron melts only at temperatures far higher than possible in normal fires, so how could microspheres have possibly been formed on 9/11?" – is simply that very small metal particles have much lower melting points than their bulk material counterparts (around 900 o C for iron nanoparticles, as opposed to 1535 o C for bulk iron). This is called the "thermodynamic size effect."
The towers contained thousands of computers and electric gadgets. Wires and filaments and meshes from electronics, as well as thin rust flakes and other small iron particles, could all have easily been made into microspheres during the WTC conflagration. To see a vivid demonstration of this phenomenon, watch the video on NMSR's YouTube channel, 'theNMSR', in which a BIC lighter is used to burn steel wool, creating numerous iron microspheres without any Thermite at all!
www.metabunk.org...