| 41. | The mineral Kegelite, discovered in the Tsumeb mine, was named after him by American volcanologist David Richardson.
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| 42. | But Jim Luhr, a volcanologist at the Smithsonian Institution, said the activity might indicate more serious eruptions later.
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| 43. | Mexican volcanologist Servando de la Cruz said that with what scientists know now, that evacuation might have been avoided.
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| 44. | Activity within the volcano's mountain has increased slightly over the previous 24 hours, volcanologist Ratdo Porpo said.
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| 45. | The Mayon volcano spewed lava 200 feet and ash clouds six miles into the air, said volcanologist Julio Sabit.
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| 46. | Jean-Claude Thouret, a volcanologist at Blaise-Pascal University in France, has studied Misti since 1994.
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| 47. | Explosive eruptions are still possible and often follow lava extrusion, said John Pallister, a volcanologist with the USGS.
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| 48. | In the mid-1930s, USGS volcanologist R . H . Finch attempted to improve on Diller s work.
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| 49. | In it, Herzog explores active volcanoes from around the world, following volcanologist and co-director Clive Oppenheimer.
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| 50. | In 1999, volcanologist Ken Wohletz ), suggested that the volcano Krakatoa exploded at the time and caused the changes.
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