The 38 North, a US institute monitoring North Korea said that the country appears to be beginning or planning to extract plutonium, the core material of a nuclear bomb, at a nuclear plant in Yongbyon, north of Pyongyang. Satellite imagery dated April 11, 2016 shows a vehicle loaded with tanks or casks in the premises of a nuclear reprocessing facility, according to the 38 North website operated by Johns Hopkins University’s US-Korea Institute in Washington. “Such tanks or casks could be used to supply chemicals used in a reprocessing campaign intended to produce additional plutonium, haul out waste products or a number of other related activities,” the institute said. Similar vehicles were observed in the early 2000s, it said, when North Korea extracted plutonium apparently as part of its nuclear programmes.
On April 4, 2016 the institute said plumes were detected from the reprocessing facility fueling the speculation that Pyongyang has engaged in additional production of plutonium.
Excerpts from Satellite images show North Korea may have begun extracting plutonium at nuclear facility, says US institute, Associated Press, Apr. 16, 2016