Originally Posted by ColinB
It appears that both sides monitored each others scientific journals and the basic research on DDT was taken as proof that we probably had nerve gases
It's been suggested that, pre-war, IG Farben shared technical information between companies in the USA and UK. (Dupont and ICI)
... let’s not forget that tabun was isolated when I.G. Farben still had close ties and were sharing data with DuPont here in America.
From the site referenced by PN in post two.
The immediate pre-war connections between IG Farben USA and its own famous parent might also be of interest.
I.G. Farben in America: The Technologies of General Aniline and Film