JAEA published the photographs of the corium from the Reactor No.2 from the Three Mile Island nuclear accident in 1979.
Asahi Shinbun (3/7/2012) reports that the 60 samples of the TMI corium have been kept at JAEA since 1991. The samples, weighing 3 kilograms, were given to JAEA by Idaho National Laboratory as part of the international research collaboration.
According to Asahi, JAEA is planning to re-evaluate the samples as part of the basic research for decommissioning the reactors at Fukushima I Nuclear Power Plant.
Cross section of a corium sample, with the surface oxidized to show colors. Green is uranium dioxide. Brownish part is metals like zirconium, iron, nickel melted together (according to Asahi):
Cross section of a small 1-mm corium grain. Whitish color is where uranium and cladding melted and mixed (according to Asahi):
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Another nuclear cover-up in Germany uncovered...
Barrels of nuclear waste stored in the German scandal reactor of Brunsbuettel (which has been shutdown since an oxyhydrogen explosion scandal almost caused a reactor catastrophe) have been found completely rusted through and leaked. The company tried to cover-up this like the oxyhydrogen explosion before, until the regulatory authorities discovered the mess.
German media keeps low profile, almost nothing is being reported.
One photo is shown here: http://www.rtl.de/cms/news/rtl-aktuell/voellig-verrostete-atommuellfaesser-gefunden-1fd4b-51ca-17-1051304.html
This report also mentions the Brunsbuettel waste storage building (which cannot be entered anymore due to intense radiation up to half of a sievert) finally has been sealed now and radioactivity surveillance instrumentation being installed.
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