Remembering History: May 18, 1980. The Mount St. Helens volcano erupts in Washington State. The blast took 1,300 feet off the top of the mountain leaving 57 people dead or missing.

May 18, 1980. The Mount St. Helens volcano erupts in Washington State. The blast took 1,300 feet off the top of the mountain leaving 57 people dead or missing.

May 18, 1980. The Mount St. Helens volcano erupts in Washington State. The blast took 1,300 feet off the top of the mountain leaving 57 people dead or missing.