The Chernobyl Disaster Began On April 26 1986 The Reactor 4 Explosion Marked Historys Worst Nuclear Disaster Hear Minutebyminute Details Of What Led To The Catastrophe And Track The Chaos And Panic That Were To Follow Compounding The Tragedy Were Numerous Attempts By Highranking Officials In The Soviet Union To Cover Up And Downplay The Explosion Which Led To The Deaths Of Thousands
