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Published on Jan 26, 2011
Produced by Stephen M. Wessells. USGS scientists recount their experiences before, during and after the May 18, 1980 eruption of Mount St. Helens. Loss of their colleague David A. Johnston and 56 others in the eruption cast a pall over one of the most dramatic geologic moments in American history. Video Credit: U.S. Geological Survey Department of the Interior/USGS