Originally posted by _BoneZ_

Originally posted by spacevisitor
Do you find it not very suspicious then that even they and all those other steel parts were completely pulverized also?

Nope, because I've never seen any evidence of pulverized steel.

Originally posted by _BoneZ_
And neither have you or Judy or anyone else.

Originally posted by _BoneZ_

Originally posted by spacevisitor
It is assumed that the explosives which were used were very special ones

The explosives used in all three WTC buildings were the same used in any other conventional controlled demolition.

The Twin Tower demolitions resembled conventional demolitions in that the Towers fell with dead-centered vertical symmetry; but differed in that material was ejected horizontally in all directions, resulting in rubble piles several times the diameter of the Towers' footprints. The Twin Towers exploded rather than imploded.
The Twin Towers were also demolished at a more rapid rate than is the case in conventional demolitions.

Contrary Evidence
The distributed explosives theory can easily explain the gross features of the collapses from the top-to-bottom destruction to the pulverization of the Towers' materials. However, there are a number of more subtle features of the collapses that do not appear to be consistent with this theory, at least in its simplest form. The following collapse features suggest that the demolition of the Towers was accomplished using technologies other than just distributed conventional explosives. In contrast, many of the same features do appear to be consistent with the thermobarics theory, and the final one suggests the thermite theory.

• Absence of high blast pressures in collapse onsets
Careful study of photographs and videos of both collapses shows that the perimeter walls do not immediately blow out in the way one would expect if explosives adjacent ot the perimeter columns were used to destroy them. Rather, the walls telescope as they disappear into the burgeoning dust clouds, to partially reappear seconds later as fragments outracing the dust cloud.

• Rapid degradation of structure
Features of the onset of both collapses indicate that structures around and above the crash zones lost almost all their strength. In the South Tower, the top not only tips, it bends: The outer wall exhibits a peculiar curve extending about 15 floors above the crash zone. Similarly, in the North Tower, the top begins to telescope straight down with no evidence of bucking in the perimeter columns. In both cases the structure's strength seems to disappear even before any of the explosive features appear.

• Uniformity of pulverization
Photographs and reports from Ground Zero indicate that the vast majority of the estimated 90,000 tons of concrete in each Tower was turned to fine dust, not a mixture of dust and gravel or larger chunks. Since blast pressures from explosive charges fall off with the square of the distance from the source, achieving such thorough pulverization with distributed explosives would seem to have required a huge number of individual packages being placed throughout the building.

• Vaporization of people
Over 1000 victims were never identified despite over a year of efforts to identify victims from even the smallest fragments using DNA. Explosive charges would be unlikely to so thoroughly degrade the remains of so many people.

• Persistence of core structures
In both collapses, a large section of the core structure extending up over 600 feet remains standing for a few seconds and then collapses. The persistent remnant of the North Tower is very narrow and delicate. It is difficult to imagine how such structures could have survived the blast pressures generated by demolition waves of explosive charges, only to themselves collapse a few seconds later.

• Rapid oxidation and intergranular melting of steel pieces
The limited metallurgical examination of some of the few pieces of structural steel that escaped the blast furnaces shows very peculiar features, such as rapid oxidation turning inch-thick steel into paper-thin scrolled pieces, cavitation giving steel the appearance of Swiss cheese, and intragranular melting. These suggest a more exotic process of destruction than mere explosives.

Originally posted by spacevisitor
That’s nonsense.

Originally posted by spacevisitor
"These suggest a more exotic process of destruction than mere explosives."

A one-inch column has been reduced to half-inch thickness. Its edges--which are curled like a paper scroll--have been thinned to almost razor sharpness. Gaping holes--some larger than a silver dollar--let light shine through a formerly solid steel flange. This Swiss cheese appearance shocked all of the fire-wise professors, who expected to see distortion and bending--but not holes.

Evidence of a severe high temperature corrosion attack on the steel, including oxidation and sulfidation with subsequent intergranular melting, was readily visible in the near-surface microstructure. A liquid eutectic mixture containing primarily iron, oxygen, and sulfur formed during this hot corrosion attack on the steel.
...
The thinning of the steel occurred by high temperature corrosion due to a combination of oxidation and sulfidation.
...
The unusual thinning of the member is most likely due to an attack of the steel by grain boundary penetration of sulfur forming sulfides that contain both iron and copper.

Geüpload door 11septembervideos op 13 jun 2008
WTC dust contains steel, ABC, 19:35, 9/13