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USGS Geologist David Johnston was swept away by the catastrophic eruption of Mount St. Helens on the morning of May 18, 1980. As one of the first members of the U.S.Geological Survey monitoring team to arrive at Mount St. Helens and the scientist in charge of volcanic-gas studies, Johnston spent long hours working on and close to the mountain. Ironically, he was caught at an observation post that was considered relatively safe. He was among 57 killed by the eruption. He is pictured here at Coldwater II, at 1900 hours. Coldwater II would eventually be re-named ''Johnston Ridge'' in honor of Dave.
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