Mangseth was born in Taconite, Minnesota and grew up and played youth hockey in Coleraine, where he went on to play high school hockey at Greenway High School. He began his coaching career at Northland Pines High School where he led the Eagles to four consolation titles in the WIAA State Hockey Tournament. His team was awarded the 1974 WIAA Sportsmanship Trophy at the state tournament. In 1975, Mangseth was voted Coach of the Year in the North Central High School Conference while his Eagles brought home the conference championship in that season.
Mangseth was lured from retirement in 1981 and helped the Eagles take the WIAA Sectional Championship in 1982 and 1983. In the 1983-84 season, Mangseth took his team all the way as the Eagles brought home their first WIAA State Championship. Following his second retirement from the high school hockey coaching ranks, Mangseth continued as director of the Eagle River Summer Hockey School, a post which he held for 15 years. He was an active supporter not only of the Eagle River Recreation Association, but also of the University of Wisconsin athletic department for hockey and football. Mangseth passed away in 1996 . |