We 've been advised to wear long sleeves , a cap , a surgical mask to reduce the amount of exposure -- that is , cover as much skin as possible . '' NEW : More than 11,000 are dead or missing in the wake of the disaster . STORY HIGHLIGHTS A fire and explosion Tuesday at the nuclear plant led to temporary radiation spike . One company says the disaster could be the most expensive in history .
NEW : More than 11,000 are dead or missing in the wake of the disaster . STORY HIGHLIGHTS A fire and explosion Tuesday at the nuclear plant led to temporary radiation spike . One company says the disaster could be the most expensive in history .