McVey’s bomb was incapable of shearing the collumns.
Had there not been all the cutting charges in the basement, the whole thing would have been a job for a small glass company.
My experience with you is that you do not know what you are talking about. I have spoken to someone who is an obvious explosives expert to me, and he tells me he could have done this too. What expertise do you have that causes you to say it couldn't have happened the way my acquaintance (engineering college friend) says it could have happened? (You can't even spell column!)