Japanese industry minister Hiroshige Seko visited the site of the 1986 Chernobyl nuclear accident in Ukraine on Thursday to learn lessons that could be useful for Japan in the process of scrapping its reactors that suffered meltdowns in the 2011 Fukushima disaster.The exploded No. 4 reactor at the nuclear plant in the former Soviet republic was originally covered by a concrete shelter, or "sarcophagus," to prevent radiation from leaking. But the shell has aged and a fresh steel structure built with financial aid from Japan, the United States and countries in Europe and elsewhere covered it …READ FULL ARTICLE