By March 18, 2011, Japan’s Prime Minister Naoto Kan said the Fukushima Nuclear Power Plant had three units in “partial meltdown” and radiation leaking at levels that can kill some people. “This is the biggest crisis for Japan in history … very grave.” Japanese officials admitted that since water cannons, fire trucks and tons of helicopter-lifted water have not stopped reactor heating, they might have to bury reactors under sand and concrete, as happened at Chernobyl in 1986.
