12 (from 4 confederations) were the number of teams who competed in Men's middleweight boxingat the Games of the XXX Olympiad . It was held in 28 July – 9 August,28 July . 28 from 28 nations,Total: 505,60 from 34 nations were the competitors in Men's middleweight boxingat the Games of the XXX Olympiad . 5 September 1971 is when Men's middleweight boxingat the Games of the XXX Olympiad was founded  . Georgia Dome were the venues of Men's middleweight boxingat the Games of the XXX Olympiad . The no. of events in sport was 18
Men's middleweight boxingat the Games of the XXX Olympiad was started on 5 September 1971