Comment: The slow motion video clearly shows...

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In reply to comment: There was no missile dammit! (see in situ)

The slow motion video clearly shows...

the yellow flash coming from the sky , and moving in a distinct downwards trajectory. If it were a gas tank like you proposed then the flash would've started from the ground, and gone upwards. Or at least had a right to left trajectory. So unless this plant had hovering gas tanks, then I don't see how your theory is anymore credible then the OP.