oh dear... 60 minutes is the maximum exposure time i can handle in this temperature (-25C or -13F). from there on out things start going haywire. hair gets frosty, random fingers and ears start tingling, legs begin to burn and toes are sending signals of "we have fallen off. you can see for yourself". and then hits the fatigue... holy buckets, i say. but, it was worth the trip! and now, hot bath later, am jolly again. <yawn...> :D