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en.wikipedia.org/wiki/1980_eruption_of_Mount_St._Helens

On May 18, 1980, a major volcanic eruption occurred at Mount St. Helens, a volcano located in Skamania County, in the state of Washington, United States.

volcanoes.usgs.gov/volcanoes/st_helens/st_helens_geo_hist_99.html

Mar 30, 2017 ... 1980 Cataclysmic Eruption. Seismogram from station CPW, 112 km (70 mi) northwest of Mount St. Helens, May 18, 1980 ...

.ask.com/youtube?q=Mt+St+Helens+Erupting&v=xP2dreOI8gI
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.

www.cbsnews.com/pictures/look-back-mount-st-helens-eruption-washington

At 8:32 a.m. Pacific Daylight Time on May 18, 1980, a 5.2 magnitude earthquake struck below the north face of Washington's Mount St. Helens. The earthquake ...

www.theatlantic.com/photo/2015/05/the-eruption-of-mount-st-helens-35-years-ago/393557

May 18, 2015 ... On May 18, 1980, 35 years ago today, an earthquake struck below the north face of Mount St. Helens in Washington state, triggering the largest ...

www.cbsnews.com/news/may-18-1980-washington-state-mount-st-helens-volcano-erupts

May 18, 2016 ... A violent eruption at Washington state's Mount St. Helens volcano killed 57 people.

www.discovery.com/tv-shows/discovery-presents/videos/understanding-volcanoes-mt-saint-helens

Mt. Saint Helens blew up with a force 20000 times greater than the Hiroshima atom bomb.

www.history.com/this-day-in-history/mount-st-helens-erupts

On this day in History, Mount St. Helens erupts on May 18, 1980. Learn more about what happened today on History.

www.geology.sdsu.edu/how_volcanoes_work/Sthelens.html

The 1980 eruption of Mt. St. Helens is the most studied volcanic eruption of the twentieth century. Although most people were unaware of the potential for such a  ...

www.mountsthelens.com/history-1.html

The history of Mt. St. Helens eruption and erupting periods including native american history and historical accounts of the volcano. Previous Eruptive History  ...