Mount St. Helens Video (video) Penn State Share Print E-Mail Loading video... Caption This is a profile view of the simulation of the 1980 blast at Mount St. Helens. Credit Istituto Nazionale di Geofisica e Vulcanologia, Italy. Usage Restrictions Not for commercial advertising use. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.