Science and lab tests might prove it is remotely possible. It doesn't prove what happened. Evidence of explosives wasn't even looked for, of course it wasn't found.
Dil, Your expansion rate is many times more than is possible. Check the decimal position on your math. Expansion of a beam that size is nothing you'd pick up in a video.
Take a 20 foot long exhaust system on a truck for example. Your trusted men in white coats would have it expanding to the point it'd break all the muffler hangers and drop to the ground when it heated up. Actually provable fact outside the lab says it's a miniscule amount, even when it's red smokin' hot. .010" per foot is a lot of expansion for steel. That means a 100 foot beam could grow an inch longer and that is contingent on the whole beam being heated not just one area. Heat 50 feet of it and you have 1/2" and that doesn't take into account heat sink into adjoining materials.
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