"Despite investigations by four special committees, key questions remain about the crisis at the Fukushima No. 1 nuclear power plant, the world's worst nuclear disaster since Chernobyl."

"The committees, each set up by the government, the Diet, Tokyo Electric Power Co. and the private sector, have key differences in interpretations of events such as if TEPCO planned to abandon the facility at one point, if critical mistakes were made in cooling overheating reactors and what actually occurred in the No. 2 reactor.

So far, the first three committees have released reports but failed to paint a clear and definitive account of what actually transpired in the critical hours and days after the Great East Japan Earthquake and tsunami on March 11 damaged and swamped the plant, as the nuclear crisis quickly spiraled out of control."

Naoya Kon and Takashi Sugimoto report for Asahi Shimbun May 1, 2012. [2]