CTBTO

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Watchdog Finds No Trace of North Korea's Nuke Test

Says it's unlikely to find a 'smoking gun' at this point

(Newser) - Plutonium or uranium: Which was the fissile material North Korea used in last month's nuclear test ? We may never know, says a nuclear watchdog agency. The Comprehensive Nuclear Test Ban Treaty Organization hasn't found any "smoking gun" radioactive traces yet, and acknowledges that "it is...

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