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[Iodine-131 detection in school lunch] Obihiro city, “Iodine-131 was mistakenly detected, possibly it’s Pb-214”

Following up this article..”“Iodine-131″ detected from various school lunch ingredients from North Kanto area” [URL] Having the detection data widely reported, on 7/1/2013 Obihiro city board of education announced on

Plant hazard

“Iodine-131” detected from various school lunch ingredients from North Kanto area

According to Obihiro city Hokkaido, Iodine-131 was detected from some school lunch ingredients produced in North Kanto area. Iodine-131 is a fission product. Half-life is 8 days. It is used


[Nuclear Regulation Authority] Fallout level in Tokyo is the second highest in Kanto area, 1.72 times much as average

According to Nuclear Regulation Authority, radioactive fallout level (Cs-134/137) in Tokyo was the second highest in Kanto area in May 2013. The report was released on 6/28/2013. In this survey,


1.8 μSv/h in a park of Tochigi, 105km South West from Fukushima nuclear plant

  A citizen’s researcher surveyed the radiation level of a park in Tochigi. It’s in Nasushiobara city, where is in 105 km South West from Fukushima nuclear plant. This is


[Express] “No butterflies, no bees this year in Nikko city Tochigi”

Introducing important tweets as [Express] for simultaneous updates.   On 10/14/2012, Fukushima Diary reported “Fukushima citizen, “We didn’t see bugs this summer, children are made carry a portable shrine in


[Over double as safety limit] 210 Bq/Kg from edible wild plants in Tochigi, 102 km from Fukushima nuclear plant

↑ The wild plant cooked as Tempura According to Ministry of Health, Labour and Welfare, 210 Bq/Kg of Cs-134/137 was measured from edible wild plants ( Acanthopanax sciadophylloides) in Tochigi.

Domestic and global Environment

4.5 μSv/h on the soil of Nasushiobara city Tochigi, “officially it’s 0.151μSv/h”

4.5 μSv/h was measured on the soil in the park of Nasushiobara city Tochigi. You see people taking a walk in the park in the video below. The ambient dose


200 Bq/Kg from fermented sludge fertilizer in Tochigi

According to MAFF (the Ministry of Agriculture, Forestry and Fisheries), high level of cesium-134/137 is still measured from the fermented sludge fertilizer. They were analyzed from October to December of

Natural disasters

The M6.2 in Tochigi may be a volcanic earthquake, 54 aftershocks happened, 3.3 cm of diastrophism to North West

On 2/25/2013, M6.2 hit North Tochigi. [URL 1] A professor emeritus Kasahara from Tokyo university points out the possibility that it might have been a volcanic earthquake. He comments there


98.8 Bq/Kg of cesium from honey produced in Tochigi

According to Nasushiobara city Tochigi, 98.8 Bq/Kg of Cs-134/137 was measured from honey produced in the city. The sampling date was August in 2012. 39.9 Bq/Kg of Cs-134 and 58.8