The only US nickels that contained any silver were made from late 1942 through 1945. The silver-alloy coins have a large mint mark above Monticello's dome instead of a small mark to the side. The letter P was used for Philadelphia issues for the first time on any coin.
Dimensions. A curling rink should be 150 feet long and have a maximum width of 16 feet, 5 inches. If a facility is too small to hold rink(s) with these dimensions, a rink can be a minimum of 146 feet long and 14 feet, 6 inches wide. The perimeter of the rink can be marked by raised barriers or by lines drawn on the ice.f a facility is too small to hold rink(s) with these dimensions, a rink can be a minimum of 146 feet long and 14 feet, 6 inches wide.
Most North American rinks follow the National Hockey League (NHL) specifications of 200 feet (61 m) Ã 85 feet (26 m) with a corner radius of 28 feet (8.5 m). The distance from the end boards to the nearest goal line is 11 feet (3.4 m).ockey rinks in most of the world follow the International Ice Hockey Federation (IIHF) specifications, which is 61 metres (200 ft) Ã 30.5 metres (100 ft) with a corner radius of 8.5 metres (28 ft).