NHK says evacuation zone is now 20 kilometers for both No 1 & No 2 power plant areas.
About time.
BBC updated - 1011: More from Walt Patterson of Chatham House. He says the presence of the radioactive caesium in the surrounding area does not pose a huge threat to public health in the immediate aftermath of the explosion. “What would be serious is if there was an explosion or fire that lifted this stuff high in the air, meaning it could get carried over a wide area.”