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On May 18, 1980, Washington state's Mount St. Helens erupts; revisiting the destructive volcanic event and revealing ten failures that escalated the catastrophe, including ignored warnings, inadequate safety zones and poor rescue planning.

Ten Steps to Disaster

Mount St. Helens

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A look at the string of errors that together sealed the fate of the Twin Towers, JFK, Deepwater Horizon and more.

S2 E5 | Mount St. Helens