"On Saturday April 26, 1986, at 1:23:58 a.m. local time, unit 4 reactor, known as Chernobyl-4, suffered a catastrophic steam explosion that resulted in a fire, a series of additional explosions, and a nuclear meltdown."
The World Health Organisation (WHO) has estimated that the total radioactivity from Chernobyl was 200 times that of the combined releases from the atomic bombs dropped on Hiroshima and Nagasaki.
Fallout Pattern
