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When did Mount Saint Helens blow?
Mount St. Helens blew on May 18,1980 on 8:31 a.m.
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Why did mount Saint Helens blow up?
It was triggered by an earthquake measuring 5.1 on the Richter scale, caused an eruption, reducing the elevation of the mountain's summit from 9,677 ft (2,950 m) to 8,365 ft (2,550 m) and replacing...
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Is Mount saint helens a valcano?
yes, it is and so called deadly.
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What were the effects of Mount Saint Helens?
56 people died, 7000 animals died,all water life died including 12million salmon and 1.4million tonnes of ash rose 20km into the air :O
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How was mount saint helens built?
it was formed not built :) :) :) :)