"Tokyo Electric Power Co. is taking steps to prevent a possible self-sustaining nuclear chain reaction at the crippled Fukushima No. 1 nuclear power plant."
Damn... This is what I suspected when we caught that the water temp was rising a couple of days ago. The way I read this, it is not possible to even approach the pile, let alone contain it. And a cement drop from above, like Chernobyl, would be useless because the reactor hasn't been entombed underneath. It's not possible now. -- MCR