On 02 December 2011, Tokyo Electric Power Company officials admitted that lack of communication resulted in Fukushima Daiichi’s Reactor 1 melting down and exploding, on 12 March 2011.
Former plant manager, Yoshida Masao (who recently resigned due to health problems, which might be caused by exposure to radiation, which TEPCo denies) said he, and other officials, were not told that Reactor 1’s cooling system was manually shut down. He realized the cooling system was not working a little more than six hours after it had been turned off. By then it was too late.
Just a few days ago TEPCo admitted, after an independent investigation, that 100% of the fuel rods in Reactor 1 melted.
The irony is that Reactor 1 had the only operable cooling system after the 11 March earthquake and tsunami hit the nuclear disaster reactor plant. Reactors 2, 3 and 4 lost their connections to electrical power, but Reactor 1 was still connected.
This could add some fuel to the conspiracy theories out there (that it was intentional, after all, look how long they’ve dragged this out!).