Worker wearing protective suit and mask works on roof of No.4 reactor building of TEPCO's tsunami-crippled Fukushima Daiichi nuclear power plant in Fukushima prefecture

Worker wearing protective suit and mask works on roof of No.4 reactor building of TEPCO’s tsunami-crippled Fukushima Daiichi nuclear power plant in Fukushima prefecture

A worker wearing a protective suit and mask works on the roof of the No.4 reactor building of Tepco's crippled Fukushima Daiichi nuclear power plant in Fukushima prefecture February 20, 2012. Reuters/Issei Kato

March 7, 2017 5:03 PM (UTC+8)