Most radioactive cesium piled up within 2 centimeters of soil surface Mainichi Daily News, Nov. 17, 2011:
The survey, conducted between July and September, covered the Fukushima Prefecture town of Tomioka, which is designated as a no-go zone, and the town of Namie, which has both a no-go zone and an evacuation preparation zone. [...]
In the leaves of deciduous trees that have grown following the onset of the nuclear disaster in March, 60 to 26,000 becquerels of cesium per kilogram was detected, while the leaves of evergreen trees that have existed since before the March 11 disasters contained levels of cesium about 10 times higher than that, at 18,000 to 220,000 becquerels per kilogram.
Published: November 17th, 2011 at 1:20 pm ET