Radioactive concrete from Fukushima

mdsolar writes: ""The Japanese government is investigating how radioactive concrete ended up in a new apartment complex in the Fukushima Prefecture, housing evacuees from a town near the crippled nuclear plant.

The contamination was first discovered when dosimeter readings of children in the city of Nihonmatsu, roughly 40 miles from the reactors at Fuksuhima Dai-ichi, revealed a high school student had been exposed to 1.62 millisieverts in a span of three months, well above the annual 1 millisievert limit the government has established for safety reasons.""