Last week the national government of Japan ordered all cattle shipments from Fukushima Prefecture halted, now they have done the same with cattle from Miyagi Prefecture.

It turns out that the majority of cesium contaminated beef came from Miyagi Prefecture. The cows were fed hay contaminated with thousands of becquerels of cesium.  The national safe limit is 500.

In another sign that radiation is spreading across Japan, officials say the contaminated cows did not come from specific areas within the prefectures, but from all over.