The act of snow-making at ski resorts has been around for more than half a century now. The snow cannon was invented by Art Hunt, Dave Richey and Wayne Pierce in 1950, who went on to patent it.3) Snowmaking started to be used on a commercial scale in the early 1970s. Since then, many ski resorts have come to depend on snowmaking. 4)
http://www.johnsoncontrolssnow.com/technology/snow-guns/safyr-snow-gun.html
Snowmaking has become increasingly complex, so as to achieve greater efficiency. Traditionally snowmaking relied on having a skilled snowmaker to operate the equipment. The addition of computer control means that snow making can be controlled with greater precision to ensure that snow guns only operate when conditions make snowmaking possible. However, the process is not fully automatic as computers only supplement human control. 5)
For more information about the art of snow-making go to this link: The Science of Snow-Making
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