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• A subcontractor of plant operator Tokyo Electric Power Co., or TEPCO, acknowledged having nine workers cover their dosimeters with lead plates late last year so the instrument would indicate a lower level of radiation exposure. • The investigation marks the first time the government has looked into the case, believed to be part of a widespread practice at the plant since it was hit by the worst atomic crisis since Chernobyl. • The government more than doubled the emergency radiation exposure limit soon after the accident, but lowered it back to the previous level in December. The law now sets the exposure limit at 50 millisieverts per year, or a five-year total of 100 millisieverts. • ___
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