that was what could of happened if the reactor was on full power and if the core overheated alot more the reaction to the water and oxygen could of caused a massive reaction of a white hot radioactive gamma ray sweeping aross the area then the reasctor could of blown again and destroyed the other 3 aswell which would have easilly caused an explosion big enough to destroy everything within 30-80 mile radius.
Uranium is a vital ingrediant to a fission bomb the explosions can be so massive it can be catastropic easilly bad enough to wipe anything out.
Uranium atoms split easilly when unstable and when atoms split they explode in reaction
