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.
The standard ice rink in North America measures 200 feet long by 85 feet wide. And every NHL game in North America is played on a standard-size rink, which means conditions in every building should be identical. Make that nearly identical. There are subtle differences in every building that most people never notice because the rinks are the same size. But players do notice that not every rink is the same despite being the standard 200-by-85.