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The present scenario is a detailed hypothetical account
of the method by which each of the Twin Towers
was totally destroyed.
Although the visible pattern of destruction of the North and South Towers
differ in details, they both fit the same general description:
The block above the crash zone starts to move,
accompanied almost immediately by dust ejections,
then disappears into the exploding dust cloud,
which progresses down the vertical axis of the Tower's intact portion
leaving nothing standing but portions of the core,
which then falls apart.
The similarities in the patterns of destruction,
as well as the nearly identical structures of the Towers themselves,
suggests that essentially the same method was used to destroy each Tower,
with adjustments of that method to account for the differences
in the plane crashes.
The scenario is described for the general case of either Tower.
It postulates that the plane crashes were planned and executed
with some degree of precision,
using their automated flight control systems,
and the adjustments in the demolition method planned accordingly.
As noted in the
summary
of the aluminothermics evidence timeline,
there is direct evidence for two broad types
of thermitic pyrotechnics in the destruction of the Twin Towers:
- Incendiaries, consisting of thermate or thermate
possibly with additives such as barium nitrate
- Explosives, consisting of aluminothermic nanocomposites
including compounds rich in silicon, carbon, and hydrogen
to enhance blast pressure
The scenario
reflects this dichotomy
in postulating that two distinct stages comprised
the demolition of each Tower:
a first stage in which strategically-placed thermitic incendiaries
attack steelwork while the Tower is still standing,
and a second stage in which widely distributed thermitic explosives
shatter the Tower from top to bottom.
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