[해외자료] Yongbyon Declassified: At Ground Zero
...facilities, the
Yongbyon Nuclear Research Center, in the early 1960’s not the late 1980’s. This research center would later become the site of North Korea’s first modified 4-megawatt thermal (MWt) IRT-2000 reactor, from which the North Koreans later admitted to separating a small amount of plutonium in 1975.