Fukushima 50 is the pseudonym given by the media to a group of employees at the crippled Fukushima Daiichi Nuclear Power Plant . Following the Tōhoku earthquake and tsunami on 11 March 2011 , a related series of nuclear accidents resulted in melting of the cores of three reactors . These 50 employees remained on-site after 750 other workers were evacuated
Tōhoku earthquake and tsunami
2011 Tōhoku earthquake and tsunami
Fukushima 50