Desperate Japan

Japan has now gone to desperate measures to try to cool down the reactors at the Fukushima Dai-ichi nuclear power plant. They have taken two Chinook helicopters with large 2,000 gallon buckets attached to try and scoop up seawater to dump on the reactors. This doesn't work well since most of the water is dissipated in the wind. Already, 20 workers have been injured or have been exposed to excessive amounts of radiation. How many more injuries, or even deaths will be needed to stop the nuclear meltdown from happening?