Natural Disaster. A cannon, powered by compressed nitrogen, that can hurl a two-pound projectile 2,000 yards. It is used to break up unstable snow, allowing it to avalanche and leaving more stable snow in place
Natural and Environmental Disaster Information Exchange System European Commission NEDIES, Forces of Nature: TQ 2000, Glossary (definitions of important terms related to forces of nature), Directorate General Joint Research Centre DG JRC, Institute for the Protection and Security of the Citizen (IPSC), Varese, Italy 2012. http://library.thinkquest.org/C003603/english/glos sary.shtml, (ND/ Gen - Brit) {154}
Natural and Environmental Disaster Information Exchange System European Commission NEDIES, Forces of Nature: TQ 2000, Avalanches Glossary, Natural and Environmental Disaster Information Exchange System European Commission NEDIES, Directorate General Joint Research Centre DG JRC, Institute for the Protection and Security of the Citizen (IPSC), Varese, Italy 2012. http://library.thinkquest.org/C003603/english/aval anches/glossary.shtml, (Eu/ Natr and Env Dzstr Info Exchange Sys - Brit) {152}