Portland Bureau of Emergency Management/Historic Disasters in the Portland Metro Area/Eruption of Mount St. Helens: Difference between revisions

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|Jim Quinn, Metro
|Jim Quinn, Metro
|Presentation slides to PBEM and Portland NET on the 1980 ash cleanup effort.
|Presentation slides to PBEM and Portland NET on the 1980 ash cleanup effort.
|-
|2023.01.10
|[https://volcanoes.usgs.gov/volcanic_ash/ Volcanic Ash and Gas Impacts & Mitigation]
|United States Geological Survey
|Variety of technical information about volcanic ash.
|-
|-
|2007.__.__
|2007.__.__
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