honestly, maybe I spent too much time with fireworks, and the like, but some of the videos of the primary explosions just look like beams themselves explode off, like they had shape charges in the exact spots they needed to. almost like different speeds of explosives that explode vs ones that expand, dirt moving vs fracturing etc.
unless you went fuel/air indoors, no way kerosene alone blasts that steel out, not like that, no way in hell.