Conversation so far:
how much bigger is olympic ice than nhl
Olympic international-sized ice is 15 feet wider than rinks used in the NHL, American Hockey League and NCAA,  100 feet compared to 85.
where do ice hockey rink specifications originate from
The ice hockey rink specifications originate from the ice surface of the Victoria Skating Rink in Montreal, constructed in 1862.

Question: what were the specifications
Self-contained rewrite: what were the ice hockey rink specifications in 1862