Well, this is interesting.....

edit: I guess this is not exactly "Ag"; however, it is interesting, none-the-less.

"Mobay was one of the suppliers of the dioxin-contaminated 2,4,5-T used to produce the Agent Orange sprayed in Operation Ranch Hand (1962-1972).^[1]

In April 1990, Mobay and Occidental Chemical Corporation refused to supply the Department of Defense with thionyl chloride, a chemical needed for the production of sarin. The US government considered filing suit against Mobay and Occidental for violating Title III of the Defense Production Act of 1950, which gives the government the power to requisition supplies for warfare.^{[2] "}