Shiitake mushrooms used in school lunches have tested positive for 350 becquerels per kilogram of radioactive cesium.  That’s below the government limit of 500 becquerels, but Yokohama school officials are getting rid of them anyway.

Yokohama is about 250 kilometers (155 miles) from the damaged Fukushima Daiichi nuclear plant.

At a Ibaraki Prefecture mushroom farm, 830 becquerels per kilogram of radioactive cesium were found on the mushrooms there.  The farm is about 170 km (106 miles) from the damaged Fukushima Daiichi nuclear plant.

Earlier in the week mushrooms in Chiba Prefecture were found to be contaminated with cesium, higher then the government safe limits.  Clearly, after almost seven months, radiation is still spreading from the Fukushima Daiichi nuclear plant.