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'Some Misunderstandings Related to WTC Collapse Analysis'

Gregory Szuladzinski, Anthony Szamboti and Richard Johns

"Some Misunderstandings Related to WTC Collapse Analysis"

International Journal of Protective Structures.

http://multi-science.metapress.com/content/bl60385h25254748/

Mod note:
Original direct link to pdf was replaced with a link to the abstract, the publisher will release the paper for free use on Jan. 1, 2014. There is currently an 18 GBP ($27.00 USD) copy fee charged for those without a subscription to the journal. However, copies can be sent to individuals for personal use by the authors and anyone they send it to. If you would like a copy, please send a request via:
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Thermite Timeline for Demolition of Structures

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In 1972 Pyronol.RTM. was patented

Google Patents 3695951

"A suitable container may be of the one described in co-application Der. No. 74,434 filed Sept 22, 1970, entitled "Incendiary Torch" by Horace H. Helms, Jr. Alexander G. . . . The material is sealed into said container, which in this case is a torch, is ignited . . . When the pressure inside the container exceeds the strength of the diaphragm the diaphragm fractures and the expanding gases will force the molten material through the nozzle. . . . Alternatively one may add a material to the instant composition which will decompose into a gas or vaporize into a gas when exposed to the heat . . . such as powdered polytetrafluoroethylene (Teflon) or other solid materials."

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In 1989 a patent was given for a device used to demolish submerged platforms.

Experiment

Ok,experiment is a basic element of modern science.In order to scientificaly prove a controlled demolition of WTC 1,2,7 we have to create a theory on the exact method,which was used to bring them down and than test it with (repetebale) experiment.

I (with large influence from achimspok's work) did a theory on the precollapse weakening and initiation of the (Twin Towers collapses).I've described it in my previous posts,but a little bit of recapitulation isn't gonna to do any damage.

core column

So what caused the precollapse bowing of the exterior walls of WTC 1 and 2?Most probably thermite charges which were placed mainly at the 104th,105th and 106th floor.This charges attacked mainly the 1000 and 900 row core columns.(I'm not claiming that this was all,maybe there were other attacked points of the structure,but I'm absolutely sure only about these points)

Wanna prove?

Who took this photo & WHEN ?

This photo is frequently presented as "proof" of the use of Thermite :

It's been around for a long time yet I have still to find who took it and WHEN ?
Anybody here who knows ?