The USGS just released a study that rated Mt. Rainier to be the 3rd most dangerous volcano in the US. The article I read can be found here .

Attached are two maps showing past mudflows. It might be quite the eye opener for people living in these areas.

Ashfall maps:


Attachments
26893-mudflows.kml (440 downloads)
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+++++++++++++ "When one gets in bed with government, one must expect the diseases it spreads." -Ron Paul