2/7. Eruption at Mount St Helens. Rising almost 10,000 feet over Washington State, the volcano had not erupted for more than 100 years until May 1980, when its unexpected explosion unleashed a destructive force estimated to be 500 times the power of the Hiroshima atomic bomb. Bernard Hill narrates.
Writer Christabelle Dilks
Producer Greg Lanning ; Director Matthew Wortman The Inside Story: page 74