March 18, 2011, 11:21 a.m. EDT Japan raises its nuclear crisis level Officials mull burying the plant in sand if power canât be restored NEW YORK (MarketWatch) â The world is now facing the worst nuclear crisis since the 1986 Chernobyl accident in the former Soviet Union, with Japanese officials saying Friday they may have to bury the Fukushima Daiichi power plant under sand and concrete. http://www.marketwatch.com/story/japan-set-to-restore-power-at-reactors-2011-03-17