As I understand it, it's groundwater that's seeping up into the plant. See: http://www.tepco.co.jp/en/nu/fukushima-np/info/images/130529_01.gif http://www.tepc

As I understand it, it's groundwater that's seeping up into the plant. See: http://www.tepco.co.jp/en/nu/fukushima-np/info/images/130529_01.gif http://www.tepco.co.jp/en/nu/fukushima-np/info/images/130529...