On May 18, 1980, the eruption of Mount St. Helens emitted 1.5 million metric tons of sulfur dioxide into the atmosphere while its pyroclastic lava flow incinerated virtually everything within a ...
In 1980, Washington State's Mount St Helens erupted, resulting in 57 human deaths, the most ever recorded for a volcanic ...
The 1980 blast remains the deadliest volcanic eruption in U.S. history. More than 300 miles from the volcano, cities like Pullman, Washington, and Moscow, Idaho, were covered in ash. A 23-year-old ...