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Thread Starter 

When skiers and riders in Summit County woke up to an unexpected powder bonus day in early December, few of them realized that the fresh fluff may have been enhanced by five new cloud-seeding generators installed recently to boost snowfall at Keystone, Breckenridge and Arapahoe Basin.

 

http://www.skinet.com/ski/content/summit-county-resorts-jump-cloud-seeding-game