Here is a little bit I came across:
Iraq's Five Most Toxic SItes to be Decontaminated
http://www.ens-newswire.com/ens/nov2005/2005-11-14-06.asp
"The Al Suwaira pesticided warehouse complex was used to store, mix and dispatch a range of pesticieds over its 30-year life. These included mercury, zinc, and calcium compounds, as well as organo-chlorine and organo-phosphorus substances like lindane, heptachlor and DDT."
Chemical weapons:
sulfur, mustard, VX, chlorine, sarin, H. Cyanide
See my previous post go to the article, it mentions losts of H. cyanide was found also.