Japan expressed disappointment on Friday about UN human rights monitors’ criticism of its treatment of workers at the crippled Fukushima Daiichi nuclear plant. Tens of thousands of clean-up workers at the plant are reportedly being exploited and exposed to toxic radiation, according to Baskut Tuncak, Urmila Bhoola and Dainius Puras, the respective UN rapporteurs on hazardous waste, […] …