So no, I'm not going to lose sleep because some of them 'professionals' think they saw molten steel, in the confusion of the moment.
I-A. The 2002 FEMA Report
New York Times journalist James Glanz, writing near the end of 2001 about the collapse of WTC 7, reported that some engineers said that a “combination of an uncontrolled fire and the structural damage might have been able to bring the building down,” but that this “would not explain,” according to Dr. Barnett, “steel members in the debris pile that appear to have been partly evaporated in extraordinarily high temperatures.” 
Glanz was referring to Jonathan Barnett, a professor of fire protection engineering at the Worcester Polytechnic Institute (WPI). Early in 2002, Barnett and two WPI colleagues published an analysis of a section of steel from one of the Twin Towers, along with sections from WTC 7, as an appendix to FEMA’s 2002 World Trade Center Building Performance Study.  Their discoveries were also reported in a WPI article entitled “The ‘Deep Mystery’ of Melted Steel,” which said:
“[S]teel – which has a melting point of 2,800 degrees Fahrenheit [1538°C] – may weaken and bend, but does not melt during an ordinary office fire. Yet metallurgical studies on WTC steel brought back to WPI reveal that a novel phenomenon – called a eutectic reaction – occurred at the surface, causing intergranular melting capable of turning a solid steel girder into Swiss cheese.”
Stating that the New York Times called these findings “perhaps the deepest mystery uncovered in the investigation,” the article added:
“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.” 
In discussing “the deepest mystery,” the New York Times story said: “The steel apparently melted away, but no fire in any of the buildings was believed to be hot enough to melt steel outright.”  That was an understatement, because a building fire, even with a perfect mixture of air and fuel, could at most reach 1,000°C (1,832°F).  In fact, Professor Thomas Eagar of MIT estimated that the fires were “probably only about 1,200 or 1,300°F [648 or 704°C].” 
I was in dowtown Manhattan that day,
I just saw what I saw: confused 'professionals' running around like headless chicken.
Grumpy, lecturing, and a bit self righteous.
I like grumpy, never felt at ease with the American obsession about pretending to feel good and be positive and smiling all the ******* time, you know, while the planet is burning. What's up with that?
I accept the evidence which pointed the leaders of AQ and Bin Laden himself admitted to responsibility in 2004. Evidence is all over the web which can be gathered at Wikipedia here and here.
the US bringing a fraud upon the world claiming that Muslim terrorist attacked our country and with that "lie" then proceeded the rest which came after.