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Mount St Helen's Volcano
When Mount St Helens erupted in the USA in 1980 it sent a huge cloud of ash and dust over eleven states.
Geologist Dorothy Stoffel was flying directly above the volcano as it blew. She tells Witness about that day.
Last on
Tue 18 May 2010
22:50GMT
蜜芽传媒 World Service Online
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- Tue 18 May 2010 04:50GMT蜜芽传媒 World Service Online
- Tue 18 May 2010 07:50GMT蜜芽传媒 World Service Online
- Tue 18 May 2010 10:50GMT蜜芽传媒 World Service Online
- Tue 18 May 2010 22:50GMT蜜芽传媒 World Service Online
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