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Yakima Herald

Mountain of memories - Mount St. Helens

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About this episode
United States Geological Survey hydrologist Carolyn Driedger reflects on the day that changed our understanding of volcanoes; May 18, 1980.
United States Geological Survey hydrologist Carolyn Driedger reflects on the day that changed our understanding of volcanoes; May 18, 1980. Less
06:41 News & Politics
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