West coast of Japan 10 times more contaminated than mandatory evacuation zone in Belarus
May 16th, 2012
500,000Bq/kg of cesium was measured on the roof of Yamagata university, announced in Yamagata prefectural disaster committee on 5/30/2011.
It was the dust accumulated around the drain on the roof of the university building.
Yamagata prefecture is on the west coast of Japan, thought to be relatively less contaminated than east coast.(100km away from Fukushima plants)