A Tokyo Electric Power Co. (TEPCO) employee wearing a protective suit and mask stands next to an impervious wall made of a steel pipe sheet pile installed along the coast, facing nuclear reactor buildings No. 1 to No. 4, at the tsunami-crippled TEPCO's Fukushima Daiichi nuclear power plant in Fukushima prefecture, November 7, 2013. REUTERS/Kimimasa Mayama/Pool
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