I’ve had nightmares in the past of being near ground zero of a nuclear explosion. Well, this is what cell phone video of that would look like (minus some light).
2700 tons of ammonium nitrate is roughly equivalent to 1.1 kilotons of TNT, or about 1/15th the yield of the bomb dropped on Hiroshima. The cameraman here died (probably instantly from overpressure). The footage somehow survived.