|Last Updated:||September 30, 2011|
|Location:||Yeongjeo-ri (영저리), Kimhyeongjik-gun (김형직군), Yanggang Province (양강도), North Korea, about 20km from the Chinese border. Note: "Yeongjeo-ri"(영조리) is often misidentified as "Yeongjo-dong (영조동)," but the actual administrative unit is "ri (리)."|
|Subordinate To:||Probably the 5th Machine Industry Bureau (5기계공업총국), Korean Workers Party (조선노동당)|
Construction of a large underground site in Yeongjeo-ri began in the mid-1990s, and it was thought to be a missile base only. However, it is in a mountainous area and is well hidden, making it a potential site for other clandestine activities.  In October 2002, North Korea admitted that it possessed a program to enrich uranium, and this site was named as one of three sites suspected for this program, along with Hagap and the Academy of Sciences in Pyongyang. 
 Yang Nak-gyu, “북핵실험 5대 의혹 장소는 [5 Suspected North Korean Nuclear Test Sites],” Asian Economy, April 14, 2011, www.asiae.co.kr/news.
 Choi Hyun-soo and Ahn Ue-geun, “북 핵 은닉 장소, 평북 구서.영변 일대… 군당국, 8 -13곳 주시 [8-13 Hidden North Korean Locations Suspected of Being Nuclear Facilities],” Kukmin Ilbo, September 19, 2009, via: www.kinds.or.kr; “북핵 개발 ‘의심’ 시설 3곳 [3 Suspected North Korean Nuclear Development Sites],” Yonhap News Agency, October 19, 2002, via: www.kinds.or.kr.