9/24 Mark Fisher ／UDMH／ But Ko Chong-song, aNKorea official who defected in the early1990s,indicated in a 2001 book that it was the center of secret military chemical work.CIAhad suspected as much since atleast1969,when it published a secret assessment of chemical production in Hamhung 咸興
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Remote Textile Plant May Secretly Fuel North Korea’s Weapons (Published 2017)
