Avalanche 19 : Natural Disaster. The rapid and sudden sliding and flowage of masses of usually incoherent and unsorted mixtures of snow/ice/rock material. (OFDA)
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Health Disaster Management: Guidelines for Evaluation and Research in the Utstein Style. Disaster Terminology Disaster Medicine and Management (Prehospital and Disaster Medcine); and Debacker, Domres, and de Boer's, Glossary of New Concepts in Disaster Medicine, USA 2002. http://www.wadem.org/guidelines/glossary.pdf, (Hlth Dzstr Mgt - Amer) {83}