Event:
U.S.S.R. performs nuclear test at Semipalitinsk, Eastern Kazakhstan U.S.S.R.
More Notable Events on September 13:
1991 55 ton concrete beam falls in Montreal's Olympic Stadium
1989 Desmond Tutu leads biggest anti-apartheid protest march in South Africa
1978 1st flight of McDonnell Douglas F-18A Hornet
1965 Today Show's 1st totally color broadcast
1788 New York City becomes 1st capital of US
