Survey Finds Radiation Over Wide Area in Japan, Wall Street Journal, August 30, 2011:
The first comprehensive survey of soil contamination from the Fukushima Daiichi nuclear plant showed that 33 locations spread over a wide area have been contaminated with long-lasting radioactive cesium, the government said Tuesday.
The survey of 2,200 locations within a 100-kilometer (62-mile) radius of the crippled plant found that those 33 locations had cesium-137 in excess of 1.48 million becquerels per square meter, the level set by the Soviet Union for forced resettlement after the 1986 Chernobyl disaster.
Another 132 locations had a combined amount of cesium 137/134 over 555,000 becquerels per square meter, the level at which the Soviet authorities called for voluntary evacuation and imposed a ban on farming.
[...] the latest data point to the possibility that cesium could also be washing away and spreading to other areas, potentially contaminating rivers, lower-lying land and the ocean. [...]
Published: August 30th, 2011 at 1:08 pm ET