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USGS Spotlight Questions
Mount St. Helens
How far did the ash from Mount St. Helens travel?
The May 18, 1980 eruptive column at Mount St.
How high was Mount St. Helens before the May 18, 1980 eruption. How high was it after?
How much ash was there from the May 18, 1980 eruption of Mount St. Helens?
During the 9 hours of vigorous eruptive activity
How old is Mount St. Helens?
Where did the name "Mount St. Helens" come from?