Radium, not Fukushima, Source of Western Tokyo Radiation Spike
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Radioactive radium-226 was the source of a high radiation reading in Tokyo’s Setagaya district yesterday, officials said, ruling out the possibility it may have come from the crippled Fukushima nuclear reactors.
An investigation of a house near the contaminated area turned up two boxes of bottles containing radium-226, Takao Nakaya, head of the Science Ministry’s office of the radiation regulation, said by phone today.