Item: Economic Benefits of Large Volume ANFO Airblasts in Avalanche Control at Alpental
Title: Economic Benefits of Large Volume ANFO Airblasts in Avalanche Control at Alpental
Proceedings: Proceedings of the 1998 International Snow Science Workshop, Sunriver, Oregon
- Jon Barker
Abstract: The implementation of tram delivery systems in combination with larger volumes of ANFO as the detonating charge has drastically changed the structure of our avalanche control routes and openings of the mountain to the public. From A1pental's opening as a ski area in 1967, the avalanche terrain with its interspersed cliffs required that some daily control work be done in a fashion other than hand routes. At first, military artillery was the natural answer. Many winters required over 600 rounds of 75mm recoilless rifle ammunition. This artillery program needed to be followed by "clean-up" hand control routes and was plagued by post control releases. In the early 1980's some 50Ib test shots 'Here lowered by simple belay lines into the International cliffs area in an effort to reduce dependence on the dwindling artillery ammunition supply.
Language of Article: English
Keywords: ammunition, explosives, terrain, artillery
Digital Abstract Not Available