You are absolutely correct, jet fuel can't melt steel beams, so why was there molten metal at the WTC collapse sites?
NIST claims that WTC 1&2 collapsed due to jet fueled fires (just normal offices fires for WTC7) which were not hot enough to produce molten steel or iron, but also claim that if there had been molten steel or iron in the debris afterwards, it would have been irrelevant to the cause of the collapses. The evidence of molten steel or iron cannot be called “irrelevant,” given the fact that the building fires, as NIST pointed out, cannot explain it.
Physical Evidence
Steel – which has a melting point of 2,800 degrees Fahrenheit – 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.
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 May 2004, the RJ Lee Group issued a report, entitled “WTC Dust Signature,” at the request of the Deutsche Bank, in order to prove (to its insurance company) that the building was “pervasively contaminated with WTC Dust The report listed five elements in this signature, one of which was: “Spherical iron and spherical or vesicular silicate particles that result from exposure to high temperature
Extremely high temperatures during the World Trade Center destruction
Journal of the American Society of Safety Engineers
The debris pile at Ground Zero was always tremendously hot. Thermal measurements taken by helicopter each day showed underground temperatures ranging from 400ºF to more than 2,800ºF
Sources related to exceptionally high temperatures, and/or to persistent heat at Ground Zero
FEMA documents in their Appendix C of its May 2002 WTC Building Performance Assessment Team study, for sample 1, “evidence of a severe high temperature corrosion attack on the steel, including oxidation and sulfidation with subsequent intergranular melting.” A “sulfur-rich liquid” containing “primarily iron, oxygen, and sulfur” “penetrated” into the steel.
Testimonial Evidence
Testimony from Firefighters:
Testimony from Other Professionals:
Testimony from Other Credible Witnesses:
Videos
WTC2 South Tower, Molten Metal pouring out the North-East Corner
The fact that the rubble contained steel or iron that had been melted shows that the buildings were destroyed by something other than fire and airplane impact.
When all of this physical evidence is combined with the testimony about explosions from many types of professionals, the claim that the Twin Towers were brought down by nothing other than the airplane impacts and resulting fires is simply not credible