DCS: reid blackburn, david a. johnston and robert landsburg
After a two-month series of earthquakes, Mount St. Helens, in Washington state, erupted at 8:32 on the morning of May 18, 1980. The entire north face of the volcano slid away, creating the largest landslide ever recorded. Volcanic ash was shot 80,000 feet into the atmosphere, raining down over 11 states. Glaciers melted, forming …
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