As Japan moves to restart nuclear power generation, the operator of the Fukushima Daiichirnnuclear plant that melted down in 2011 is facing mounting legal challenges.rnA judge has forced disclosure of a 2008 internal document for managers at Tokyo ElectricrnPower Co. (TEPCO) warning of a need for precautions against an unprecedented nuclearrncatastrophe, such as what happened three years later when an earthquake and tsunami hitrnnortheastern Japan.
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