Quote Originally Posted by bluedog225 View Post
I can’t imagine the engineering that would have gone into designing them to have that wall remain after the blast.
My guess is that after blowing away the near wall, the grain inside the silos, being loose media, damped the blast energy before the wave reached the far walls of the silos. Meanwhile, the blast waves tucked in behind the silos just like waves going around an island, though more so, not just due to the enormous pressure differential of the blast wave versus atmospheric pressure, but because the blast wave was essentially sound waves (I can't recall if supersonic), which curve well around structures. I'm trying to think of more accurate terminology but my brain is failing right now.