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… used to describe the terrorist use (or threatened use) of Chemical, Biological, Radiological or Nuclear material as a … used to describe the terrorist use (or threatened use) of Chemical, Biological, Radiological or Nuclear material as a … Hazards posed by these materials vary, but include:  Chemical : Poisoning or injury caused by chemical
… Japanese apocalyptic cult responsible for the Tokyo subway chemical attack the following year, attempted to use a remote-controlled helicopter to spray a chemical gas. In the early 2000s a number of plots linked to …