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In June 1991, after more than four centuries of slumber, Pinatubo Volcano in the Philippines erupted so violently that more than 5 billion cubic meters of ash and pyroclastic debris were ejected from its fiery bowels producing eruption columns 18 kilometers wide at the base and heights reaching up to 30 kilometers above the volcano’s vent.In its wake 847 people lay dead, 184 injured, 23 missing, and more than 1 millon people displaced. Hundreds of millions of dollars in private properties and infrastructure lay in ruins which would require tens of billions of pesos and several years to rebuild. For months, the ejected volcanic materials remained suspended in the atmosphere where the winds dispersed them to envelope the earth, reaching as far as Russia and North America. This phenomenon caused the world’s temperature to fall by an average of 1 degree Celsius. Clearly, Pinatubo’s eruption signals the world’s most violent and destructive volcanic event of the 20th century.
