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Evidence of a severe high temperature corrosion attack on the steel, including oxidation and sulfication with subsequent intragranular 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. This sulfur-rich liquid penetrated preferentially down grain boundaries of the steel, severely weakening the beam...
It is much more difficult to tell if melting has occurred in the grain boundary regions in this steel as was observed in the A36 steel from WTC 7. It is possible and likely, however, that even if grain boundary melting did not occur, substantial penetration by a solid state diffusion mechanism would have occurred as evidenced by the high concentration of sulfides in the grain interiors near the oxide layer. Temperatures in this region of the steel were likely to be in the range of 700–800 °C (1,290–1,470 °F).
Originally posted by seethelight
So if the Truther movement is wrong about one thing, how can we trust anything you guys say? Great logic, applied to your movement's many mistakes.
Originally posted by seethelight
How many of you have read any of this?:
www.nist.gov...
Originally posted by seethelight
Name another building like WTC7 that has been allowed to burn for over 6 hours without attempts to put out the fire.
Originally posted by bsbray11
NIST (Shyam Sunder) also said before it released its final WTC7 report that it would be impossible for a building to accelerate into itself at the rate of gravity due to fires. Then not long after that they came out with their measurement that WTC7 actually did accelerate at the rate of gravity. Did they then change their theory accordingly, to investigate for some other cause? No, of course not. They just sandwiched it between two slightly slower "stages," came up with some misleading numbers using the non-linear theoretical acceleration curve and pretended it didn't mean anything anymore.
excuse
An excuse is a reason which you give in order to explain why something has been done or has not been done, or in order to avoid doing something.
investigation
an official examination of the facts about a situation, crime, etc.