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Slide 1

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Mount St Helens…read more

Slide 2

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What happened?…read more

Slide 3

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Mount St Helens was dormant for
123 years...…read more

Slide 4

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Volcanic activity had been building
th
since 20 March, an earthquake of
4.0 was recorded. The volcano was
being monitored carefully...…read more

Slide 5

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th
27 March, there was a small
eruption of steam and gas...…read more

Slide 6

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A huge bulge appeared on the
North side of Mt. St. Helens by
May. The bulge grew 1.5m a day.…read more

Slide 7

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Slide 8

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Slide 9

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Slide 10

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