They are checking radiation contained in soil.
The result of Miyagi turned out to be pretty shocking.
(Total of cesium)
Oogawara cho 131,000Bq/㎡、
Oosakishi A 52,000Bq/㎡、
Oosakishi B 55,000Bq/㎡、
Kesennumashi 26,000Bq/㎡、
Natorishi 44,000Bq/㎡、
Kawasakicho north part 2,000Bq/㎡
Miyagi is a main granary of rice.
We better not eat rice until we get out of Japan.
http://blog.goo.ne.jp/nagaikenji20070927/e/af0194da58fd9e4a9c38bd3851e3d3ce