Radioactive material in sludge at 16 prefectures, NHK, June 14, 2011:
[...] NHK has found through interviews that at least 22 of Japan’s 47 prefectures have been testing sludge for radioactive material. 16 of them, ranging from Hokkaido to Osaka, have actually detected radioactive substances.
The level of radioactive cesium was highest in Fukushima city, at 447,000 becquerels per kilogram. This was followed by Tokyo at 55,000 becquerels and Maebashi, north of Tokyo, at 42,800 becquerels.
Published: June 14th, 2011 at 9:48 am ET
- Highly radioactive sewage found 30+ miles from Fukushima plant — Cesium levels up to 334,000 becquerels per kilogram May 2, 2011
- 100,000,000 becquerels per cubic centimeter of radioactivity estimated for Fukushima sludge June 10, 2011
- Sharp rise in Iodine-131 levels at three Tokyo sewage plants (CHART) July 19, 2011
- Highly radioactive substances detected in Tokyo — Higher than what was found near Fukushima plant May 15, 2011
- US Navy detects “radioactive plume” 100 miles from Fukushima March 14, 2011