How could it be, when not a single significant answer from the OP has been answered by any truther at all?
Unless you admit that truthers cannot and will not answer these questions, EVER, because there IS no logical and factual connection between collapse initiation mode and reports of molten steel.
To give props where props are due MM has put forth that he believes that the molten steel was there from the beginning and was kept molten by the slow release of heat due to the insulative effects of the rubble pile.
That is as close to answering the OP that anyone has come.
tmd insists on debating the existance of molten steel in a thread in which the OP assumes there is molten steel.
A clear case of an inability to take 'yes' for an answer it would seem.
tmd asserts that since no 'official' account exists concerning molten steel or any discussion of how such would be produced, that the existance of molten steel is therefore poison to the 'official' story.
Far from it of course. Take NIST for example, what was their task? To work on the damage to the buildings and the collapses. Underground fires and the effects that such fires have on the rubble of collapsed buildings was simply not their task.
FEMA had interest in the rescue and clean up and the underground fires would have hampered that effort but as proved in Centralia it already known how difficult fighting such fires is and there would be no impetus to describe in minute detail, those fires.
So I have to ask, what official agency would be interested or tasked with determining the details of the underground fires and why?
tmd asserts that this answers the qusetion of 'so what?' His reasoning goes something like this:
There are reports of molten steel>>Molten steel is not mentioned officially>>therefore molten steel is anathema to the official story>> therefore the official story is hiding the existance of molten steel because it illustrates the falseness of that history.
1) it has been shown that reports of molten steel are no uncommon
2) there is no reason for any official mention of the molten steel in the underground other than as it affected the clean up operation and certainly no reason to attempt a detailed analysis of how said molten steel came to be.
3) It does not follow, logically, that not mentioning a detail that has nothing to do with the task of a report is evidence that the report is false.
4)this still does not explain from a 911 conspiracy POV how the molten steel came to be and given that this molten steel is considered to be a cornerstone of the conspiracy 'evidence' , explaining its distribution and how it came to be is important for any conspiracy theory.