A message posted on al-Qaeda affiliated message board, which contains a special military section, on Thursday, May 12, 2005, provides a 3-page “List of Hazards of Working with Different Chemical Substances,” which contains a detailed map of the potential consequences of handling and being exposed to a range of 24 elements and their derivatives, including poisoning from lead, antimony, mercury, phosphorus, hydrocyanic acid, and tetrachloroethylene.

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