[adolgert]

I didn't mean to drop that comment and leave. I learned about the weaponization from Ft. Dietrich people. The group that worked on this is long since retired. They published three papers around 1950, as three parts, that are about 1. the largest study of spread of rust fungus outdoors 2. storage of rusts and 3. response of rust to weather. All useful for stopping rust on a crop. And I see someone contributed references that are more direct than my scientific ones. I was working on prevention of rust spread.