​Earthquake swarm detected beneath Mount St. Helens - CBS News

CBS News
​Earthquake swarm detected beneath Mount St. Helens
CBS News
Magma stores are recharging inside Mount St. Helens, setting off a swarm of small earthquakes since last month, according to the U.S. Geological Survey. Since the catastrophic eruption of May 18, 1980, scientists have been conducting research and ...
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