Mt. St. Helens Eruption (May 18, 1980)
The eruption of Mt. St. Helens in Washington State in May 1980 resulted in a variety of projects at Pacific Northwest National Laboratory. The work included sampling and analysis of the ash, biological effects studies, and public information programs.

Pilot: Bob Hannigan;
CoPilot: Jeff Gregory;
Scientists: Elwood Lepel, Khris Olsen and Dave Robertson.
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