By Eduardo Baptista BEIJING (Reuters) – Most fans at an ice hockey game devote their attention to the whizzing puck and crunching body checks. Rick Ragan fixates on the frozen white surface on which the action takes place. “I’m watching how the ice is getting cut up, how much snow is getting made. I’m taking the temperature of the ice as the game is going on,” he said. It is that discerning eye for ice that landed the 48-year-old Minnesota native his job as chief ice maker for the main ice hockey venue at the 2022 Winter Olympics, the Wukesong Arena, which also hosted basketball during the 200…

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