How long did the 1980 eruption of mount St Helens last?

(3) On June 2, 2010 at 4:10 pm Joshb. bob [4] said:

Any more information about the ours of the eruption?

(2) On October 20, 2008 at 3:21 pm Kms10594 [0] said:

*answer

(1) On October 20, 2008 at 3:21 pm Kms10594 [0] said:

where did you find that

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