1962 - 1964 U.S. army produced over 100,000 pounds of BZ for use in Vietnam.
1962 U.S. military allocates 2 million dollars to the construction of a facility designed exclusively for weaponizing conventional bombs with BZ.
1963 Major James S. Ketchum, who participated in research experiments at the US Army Chemical and Research and Development Laboratories at the Edgewood Arsenal in Maryland, publishes a technical memorandum detailing BZ's effects on 362 human subjects.
1964 Army begins using BZ gas in Vietnam.
Late 1960's BZ production is discontinued because "its effects on enemy front-line troops would be varied and unpredictable".
1986 U.S. military chemical arsenal at Pine Bluff still contains BZ bombs awaiting destruction.
1990 The movie Jacob's Ladder portrays the use of BZ during the Vietnam war.