Possible black substance in Tokyo
HCR reported possible black substance in Tokyo.
It was found in a park in Ayase Adachiku Tokyo.
— kat3 (@kat3_x) March 21, 2012
[Black substance] It’s severely contaminated in Tokyo too. Around in the park and school of Ayase Adachiku Tokyo, maximum reading was 3.829μSv/hr. In a lot of places, it was over 2 μSv/h.