KING archive video: May 18, 1980 Mount St. Helens erupts

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by KING 5 News

NWCN.com

Posted on May 18, 2010 at 6:37 AM

Updated Tuesday, May 18 at 11:10 AM

About 20 seconds after 8:32 a.m. on May 18, 1980, the bulging, unstable north flank of Mount St. Helens suddenly began to collapse, triggering a rapid and tragic train of events that resulted in widespread devastation.

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