"Explosion Rocks Japan Nuclear Plant After Quake"
"An explosion at a nuclear power plant in northern Japan on Saturday blew the roof off one building, brought down walls and caused a radiation leak of unspecified proportions, Japanese officials said, after Friday’s huge earthquake caused critical failures in the plant’s cooling system. "
"Japan Floods Nuclear Reactor Crippled by Quake in Effort to Avert Meltdown" (New York Times)
Six Reactor Units Now Failed at Fukushima Plant (Los Angeles Times)
"Quake-Hit Japan Nuclear Plant Faces Fresh Threat" (Reuters)