I am absolutely shocked that the Japanese were not calling it natural disaster. I wondered if it was posts like that one from the plant designer who said this could have been limited to a one day power outtage if they had handled it differently: http://www.examiner.com/wilderness-photography-in-eugene/fukushima-the-path-not-taken-1
They must have tested the waters to see what they could work with - what they can defend the rest of their lives.