“Citing a “key Intelligence source,” CBS News reports that the federal government uncovered an al Qaeda plot earlier this year to poison salad bars and buffets at a variety of undisclosed locations. The report quotes from an al Qaeda website where terror leaders call for “…attacking the enemy with smaller but more frequent operations” to “add a heavy economic burden to an already faltering economy.”
Specifically, terrorists have proposed using the poisons ricin and cyanide, both of which can be fatal in small doses.”
http://www.slashfood.com/2010/12/21/al-qaeda-plots-all-you-can-eat-terror/#ixzz18v8acfS5