when did the 4 minute mile get broken
Four-minute mile Breaking the four-minute barrier was first achieved on 6 May 1954 at Oxford University's Iffley Road Track, by Englishman Roger Bannister,[4] with the help of fellow-runners Chris Chataway and Chris Brasher as pacemakers.[5]
Three Mile Island accident The Three Mile Island accident occurred on March 28, 1979, in reactor number 2 of Three Mile Island Nuclear Generating Station (TMI-2) in Dauphin County, Pennsylvania, near Harrisburg. It was the most significant accident in U.S. commercial nuclear power plant history.[2] The incident was rated a five on the seven-point International Nuclear Event Scale: Accident with wider consequences.[3][4]