Technicians check a radiation filtering machine used to scrub water clean of most radioactive elements, including cesium and strontium, at the tunami-crippled Fukushima Daiichi nuclear power plant. Photo: Reuters

Tepco took months to release record strontium readings at Fukushima, says regulatory official

Nuclear regulator unaware of record strontium readings until this month

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Technicians check a radiation filtering machine used to scrub water clean of most radioactive elements, including cesium and strontium, at the tunami-crippled Fukushima Daiichi nuclear power plant. Photo: Reuters
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