Who were the manufacturers who produced Agent Orange for the military?

Dow, Monsanto, Diamond Shamrock Corporation, Hercules Inc., Uniroyal Inc., T-H Agricultural & Nutrition Company, and Thompson Chemicals Corporation. These companies were subjects of a class action lawsuit filed originally in 1979 and settled out of court in 1987 for $180 million. The official name of the lawsuit was Multidistrict litigation 381 (MDL 381), and was designated In re Agent Orange Product Liability Litigation.