You're arguing a strawman. FdF said that the eroded samples were scarce, not that there was only a single one. It's clear that there was more than one, but it also appears that there were relatively few compared to the total amount of steel in the pile. Nothing you've posted disagrees with this.
And incidentally, I thought the samples Astaneh-Asl reported on were the same samples as the ones FEMA collected. I think you may be double-counting them.
Dave
I remeber reading that Astaneh-asl wanted to piece the steel together like an airplane crash. That would have been great. then the nist would not have had to rely on a comp, they would of had the steel to see exaclty the way it fell.
and no, it wasnt the same piece:
from the deep mystery piece-
"
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."
and from the Astaneh-asl piece:
"One piece Dr. Astaneh-Asl saw was a charred horizontal I-beam from 7 World Trade Center, a 47-story skyscraper that collapsed from fire eight hours after the attacks. The beam, so named because its cross-section looks like a capital I, had clearly endured searing temperatures. Parts of the flat top of the I,
once five-eighths of an inch thick, had vaporized.
Less clear was whether the beam had been charred after the collapse, as it lay in the pile of burning rubble, or whether it had been engulfed in the fire that led to the building's collapse, which would provide a more telling clue.
The answer lay in the beam's twisted shape. As weight pushed down, the center portion had buckled outward.
''This tells me it buckled while it was attached to the column,'' not as it fell, Dr. Astaneh-Asl said, adding, ''It had burned first, then buckled.''
notice also that from his expert opinion, that it burned/vaporized first and then buckled. and not as it lay in the debris pile. hummmmmm....isnt that interesting.