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40 years ago today mount st. helens erupted, killing 57 people, causing
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Mount Saint Helens Facts: Lesson for Kids - Lesson | Study.com
How The Seattle Times covered the Mount St. Helens eruption 36 years
Then and Now: The Mount St. Helens Eruption, four decades later
Mount St. Helens, the Worst Volcano Eruption in U.S. History | Time
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A riveting view of Mount St. Helens | OregonLive.com
Mount St. Helens: Never-before-published photos capture eruptions