Dwight R. Crandell dies at 86; volcanologist helped predict 1980 eruption of Mt. St. Helens

Monday, April 20, 2009 - 02:28 in Earth & Climate

Dwight R. "Rocky" Crandell, a U.S. Geological Survey volcanologist whose persistent tracking of deep layers of mud led to a pioneering reassessment of volcano hazards in the Pacific Northwest, died April 6 at a hospice in Wheat Ridge, Colo., from a heart attack. He was 86.

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