A long time ago back when I was fairly little and not yet an experienced hockey player, my aunt bought me a video for my 9th birthday called "Hockey Fights and Big Hits." To my amazement instead of NHL hits on this video they were all college and minor league and you better believe there was some good shots from State and Wolverine players going head to head against one another. In one clip (and this had to of been like a mid 80s clip possibly early 90s) there was a MASSIVE brawl between Michigan and State in what looked like Munn Arena. Two of the players were absolutely tearing each other part and the official did nothing to stop these two and this fight goes on for about a minute or so. Was stopping fighting not enforced in college hockey during the 1980s or 1990s? I was born in 1989 so forgive my lack of knowledge. This was a nasty fight.
good luck with that