13-02-2012, 10:17 PM
The evidence of explosives found in the dust is inconclusive. The Harrit Nano thermite paper asserts that the red gray chips are un reacted nano thermite. However there are dissenters to this thesis which assert that nano thermite does not have the explosive power to destroy steel or concrete for a building demolition.
Harrit has mentioned in a listserve I am on that he estimates that there would have had to have been 160 tons of nano thermite per floor. YIKES that seems to make this a non starter if true.
There are also claims that the red gray chips are the primer paint used by LaClede steel who produced much of the structural steel and supplied it shop primed... red by the way. I believe additional tests on dust are being conducted to determine/confirm or dispute the Harrit findings what was in the dust... what the red gray chips were.
Further, there is very little evidence if any that steel was exploded apart. There are some steel samples showing severely eroded and in even missing parts of steel which is attributed to eutectic type burning. Eutectic burning is a process wherein a chemical is introduced which changes the temperature performance of a material:
The notion being that the melting point of steel was lowered by the eutectic (since there is no way for office or fuel fires to reach the melting point of steel in open air burns of such short duration.
Some chemists have suggested that the building materials themselves might have acted and produced a thermitic-like reaction using the sulfur within the gypsum of the insulation. The concept being that at some point the gypsum decomposes and releases the sulfur, and with the presence of aluminum oxide and iron oxide thermite was created. If true this could burn through steel and obviously raise the temps and weaken it.
It should be noted that the steel did NOT have to melt for the core to fail. Heat lowers the strength of steel and so in combination with destroyed columns (in the case of the twins) the reserve strength is eat up as the temps of the steel rises... to the point where all the reserve strength COULD be lost and the columns fail from being over loaded.
None of the above rules out placed devices or chemicals or in the case of the twins delivered as payload on the planes.
Harrit has mentioned in a listserve I am on that he estimates that there would have had to have been 160 tons of nano thermite per floor. YIKES that seems to make this a non starter if true.
There are also claims that the red gray chips are the primer paint used by LaClede steel who produced much of the structural steel and supplied it shop primed... red by the way. I believe additional tests on dust are being conducted to determine/confirm or dispute the Harrit findings what was in the dust... what the red gray chips were.
Further, there is very little evidence if any that steel was exploded apart. There are some steel samples showing severely eroded and in even missing parts of steel which is attributed to eutectic type burning. Eutectic burning is a process wherein a chemical is introduced which changes the temperature performance of a material:
"A eutectic system is a mixture of chemical compounds or elements that has a single chemical composition that solidifies at a lower temperature than any other composition made up of the same ingredients. This composition is known as the eutectic composition and the temperature is known as the eutectic temperature.
Eutectic alloys have two or more materials and have a eutectic composition. When a non-eutectic alloy solidifies, its components solidify at different temperatures, exhibiting a plastic melting range."
Eutectic alloys have two or more materials and have a eutectic composition. When a non-eutectic alloy solidifies, its components solidify at different temperatures, exhibiting a plastic melting range."
The notion being that the melting point of steel was lowered by the eutectic (since there is no way for office or fuel fires to reach the melting point of steel in open air burns of such short duration.
Some chemists have suggested that the building materials themselves might have acted and produced a thermitic-like reaction using the sulfur within the gypsum of the insulation. The concept being that at some point the gypsum decomposes and releases the sulfur, and with the presence of aluminum oxide and iron oxide thermite was created. If true this could burn through steel and obviously raise the temps and weaken it.
It should be noted that the steel did NOT have to melt for the core to fail. Heat lowers the strength of steel and so in combination with destroyed columns (in the case of the twins) the reserve strength is eat up as the temps of the steel rises... to the point where all the reserve strength COULD be lost and the columns fail from being over loaded.
None of the above rules out placed devices or chemicals or in the case of the twins delivered as payload on the planes.