Lateral Blast
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... desite lava is more "sticky" than basalt and tends to be more explosive. The first recorded eruption of the mountain was estimated around 40,000 years ago. In 1802 A.D. there was a great eruption of ash. About this time mudflows and lava flows occurred.
On May 18, 1980 around 8:31 a.m. Mount Saint Helens erupted. Denver Nelson predicted that the eruption would occur at 8:30 Sunday morning, and missed his prediction by one minute. Seventeen missing people were presumably said to be dead from being s o close to the mountain. Including one eighty year old man who refused to leave his home, which he had lived in for fifty years, on the side of Mt. St. Helens. Thinking that he knew the mountain so well that it would never hurt him. But he was wrong. His memorial would be one ...
