We may now know where the cores ended up. They just had to shutdown the water treatment system because the Cesium filters got too radioactive in just 5 hours. They were supposed to last a month before becoming that hot. Just like we told you well over a month ago, they were slowly cooling the melted reactor mass (corium) with aggressive water injection. Of course back then the reactors were only supposed to have suffered partial meltdowns according to the nuclear experts. Looks like that water is full of radioactive particulates (ie - Corium debri fields.). Very deadly stuff. That contaminated cooling water may be more radioactive then estimated by a factor of about 144.
Your report certainly sounded like things were very bad. And you had a fact -- they shut down after 5 hours because their cesium filter saturated.
However, you then again leaped into rampant speculation. We'll know why the filters filled up in a few days, when the experts finish their analysis. But as in so many other cases of reports from the plant, people just jump to conclusions, insist that whatever they are seeing proves what they speculated about before, and continue to spread unwarranted fear and panic.
So, exactly how hot is this filter problem? Here's from the news story:
NHK, the national broadcaster, said that the filters had accumulated four millisieverts of radioactive material per hour, about as much as was expected to be collected in a month.4 milliseiverts per hour.