Any molten metal you see is MUCH more likely to be aluminium from the planes.
But that is incidental. If steel can be weakened to such a degree by office fires that engineers felt it necessary to fireproof it at great expense, then perhaps the insistence that fires could not result in failure in steel columns is not entirely truthful.
As for your other assumption there is a very nice graph exactly halfway down the page I'm linking to that will help clarify why I made that point.
Avoid the other stuff, its boring, go straight to the graphs.
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