The 1980 Mount St. Helens eruption killed 57 people and caused more than $1 billion in damage.
On May 18, 1980, 30-year-old scientist David Johnston was in an observation post with the U.S. Geological survey monitoring Mount St. Helens. At 8:32 a.m., a 5.1 magnitude earthquake struck beneath ...
46 years ago today, Mount St. Helens erupted. The massive eruption sent ash and steam skyward as the north face of the mountain collapsed.
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