“The presence of a large former Iraqi chemical weapons production plant in territory seized by the Islamic State has compounded those fears, although officials and chemical weapons experts say the 2,500 degraded rockets filled with nerve agents that remain there are unlikely to be fit for use. Weapons inspectors sealed them off with concrete in a bunker more than 20 years ago.” Washington Post, Oct. 23, 2014
Since sealing them off didn’t work, I would guess they could still be in pretty good condition. Remember? There weren’t any?