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Mt Saint Helens Rock Crusher

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At 832 sunday morning, may 18, 1980, mount st. helens erupted shaken by an earthquake measuring 5.1 on the richter scale, the north face of this tall symmetrical mountain collapsed in a massive rock debris avalanche. in a few moments this slab of rock and ice slammed into spirit lake, crossed a ridge 1,300 feet high, and roared 14 miles down the toutle river. the avalanche rapidly released ...

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