Portland Bureau of Emergency Management/Historic Disasters in the Portland Metro Area/Eruption of Mount St. Helens: Difference between revisions
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|2025.12.03 | |||
|1980 Mt St Helens Ash Cleanup (presentation slides) | |||
|Jim Quinn, Metro | |||
|Presentation slides to PBEM and Portland NET on the 1980 ash cleanup effort. | |||
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|1980.06.30 | |1980.06.30 | ||
