In 1988… A welder accidentally set a fire in a plant called PEPCON near Henderson, Nevada. This is where they made the solid fuel for the space shuttles booster rockets. The resulting explosion equaled 100,000 tons of TNT… or the equivalent of a one kiloton nuclear bomb.
There was $71 million dollars in damage.
This video was taken from enough miles away so that the sound took a few seconds to reach the microphone.