Method for making snow wherein snow is made within a closed environment by discharging water droplets into a body of air maintained by air conditioning means at a temperature and humidity such as to turn the water droplets into snow, falling on to a surface including coolant pipes which are covered with a layer of snow, the coolant being at a lower temperature than the air temperature such that there is a temperature gradient in the snow layer of the order of 0.1 degrees centigrade per centimeter depth, whereby during the initial part of the process a small quantity of small droplets is discharged to provide nucleating particles, and thereafter a larger quantity of droplets is discharged and whereby incoming air to be discharged into the body of air is drawn over cold surfaces.
This application is a continuation of U.S. patent application Ser. No. 10/493,617, filed Jun. 4, 2004 now U.S. Pat. No. 7,062,926, which is the U.S. national phase of PCT International Application No. PCT/GB02/04792, filed Oct. 23, 2002, which designated the U.S. PCT/GB02/04792 claims priority of Great Britain Patent Application No. 0125424.2, filed Oct. 23, 2001. The entire contents of these applications are hereby incorporated by reference in this application.
