a radiator can be used to cool air to blow on people during heat wave events when air conditioning is not available. Ice sculptures, ice walls for fire fighting, property protection and cooling stations may be cast by a process in which ice water (one part), crushed ice or ice cubes (three parts) and tiny, floating, dry ice pellets (one part) are placed in a cement mixer. The tiny dry ice pellets super cool the ice water so that the ice water acts like glue to cement or freeze the crushed ice or ice cubes together within several seconds once the mixture stops moving within the mold. The ice water component of the mixture will expand 9% on freezing, so rubber, foam or foam lined casting materials work best to combat the water to ice expansion problem not encountered with wax, cement, casting plaster or metal casting materials. Ice sculpture or ice walls may be stopped from melting by placing and keeping vertical voids in the ice sculpture or ice wall filled with the same type of tiny dry ice pellets used to make ice walls by the Icecrete process previously called Cryocrete in a 2014 U.S. provisional patent. Around the world There are a number of international ice and snow sculpting events around the world. The largest events are, understandably, held in countries with cold winters. Due to land distribution and population densities in the higher latitudes, large ice sculpture events are almost exclusively held in the Northern Hemisphere. A number of countries, some listed below, have established traditions of ice sculpting and have made contributions to the art. Ice artists from these countries regularly appear at international ice sculpture events. Belgium Ice sculptures were displayed at the Ice Sculpture Festival on November 28, 2010 in Brugge, Belgium. More than 300,000 kilograms of ice are shipped in for sculptors to work on in the special tents and it runs until January 16, 2011. Canada In Canada, Quebec City, Quebec holds an ice sculpture festival each year during the Quebec City Winter Carnival. The sculpture festival lasts about three weeks. For the sheer variety of ice sculptures and the number of visitors, the Quebec festival is regarded by some as the best in the world. Each year, about twenty teams are chosen to participate in the competition. Half of these teams come from Canada and the others come from other