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What was the biggest volcanic eruption in... | Almanac.com

What was the biggest volcanic eruption in...

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What was the biggest volcanic eruption in the United States?
The most recent notable volcanic eruption in the United States was the eruption of Mount St. Helens on May 18, 1980, in the state of Washington, in which more than 50 people were killed. Most other volcanoes in the United States are not active and have not been for many years.

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