St Helens

What Caused Most Of The Damage From The Mt St Helens Eruption?

Autopsies indicated that most of Mount St. Helens’ vicitims died by asphyxiation from inhaling hot volcanic ash, and some by thermal and other injuries. The lateral blast, debris avalanche, mudflows, and flooding caused extensive damage to land and civil works. What damage did Mt Saint Helens cause? The eruption damaged roughly 230 square miles of …

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