– Japanese TV: Fukushima fuel cores have ‘molten-through’ containment vessels — Location of molten fuels is unknown — “Risk of re-criticallity” from filling vessels with water (ENENews, March 20, 2014):
Email update from Genn Saji, former Secretariat of Japan’s Nuclear Safety Commission, Mar. 10, 2014 (emphasis added):
On February 26, NHK released (Japanese only) a news on their overall view on un-dissolved nub parts of the Fukushima Daiichi nuclear accident. The identified issues are categorized in the following four topics;