Tokyo (CNN) -- Japan's nuclear safety agency on Friday worsened its assessment of problems at the Fukushima nuclear power plant as soldiers and utility workers continued a frantic effort to hose down overheating nuclear fuel with water cannons.
The Nuclear and Industrial Safety Agency raised...
accident assessment
cooling system
crisis management
emergency services
engineering challenges
environmental impact
evacuation
fukushima
international response
nuclear crisis
nuclear safety
power restoration
public health
radiation
radiation levels
reactordamage
safety
seawater injection
three mile island