| 21. | The eruption of Pinatubo severely hampered the economic development of the surrounding areas.
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| 22. | Pinatubo's eruption, is an unparalleled achievement.
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| 23. | A portion of Mount Pinatubo is in the municipality.
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| 24. | Pinatubo eruption in the Republic of Philippines in 1991.
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| 25. | Pinatubo volcanic eruption and even flown patients who required extensive medical help to Hawaii.
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| 26. | Raymundo Punongbayan wrote to the head of the Mount Pinatubo Rehabilitation Project Management Office.
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| 27. | Pinatubo and shown a substantial shift towards industrialization.
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| 28. | Pinatubo in the Philippines, New Scientist said.
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| 29. | The June 15 final massive eruption of Mount Pinatubo began at 13 : 42.
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| 30. | Pinatubo's 1991 eruption was one of the most violent of the 20th century.
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