Radiation News Roundup June 04, 2016 The Japanese government has withheld an investigative report it compiled on health effects from the 1986 Chernobyl nuclear catastrophe despite spending 50 million yen on the survey in the wake of the Fukushima nuclear disaster, it has been learned. mainichi.jp North Korea may have reactivated a plant for reprocessing plutonium for use in nuclear weapons, the UN atomic watchdog said Monday, citing satellite imagery and echoing recent comments from a US think-tank. yahoo.com Russia's Research Institute of Atomic Reactors (RIAR) and the Korea Atomic Energy Research Institute (KAERI) have signed a memorandum of understanding on scientific and technical cooperation. world-nuclear-news.org FTSE 100-listed engineering company Rolls-Royce has been shortlisted to build a fleet of mini nuclear reactors, City A.M. understands. cityam.com