Dow, Bayer, DuPont and others have determined threshold limit values (TLVs) for at least 100 chemicals. Countries all over the world have relied on American TLVs, many of which were based on unpublished company communications.
The article also describes intoxications in Bayer Chrome factories in Mexico and South Africa.
International Journal of Occupational and Environmental Health, Vol 1, Apr - June 1995
The Migration of Industrial Hazards
by Barry Castleman
see full article: (author: Barry Castleman) (Download: Migration_of_Industrial_Hazards1995.pdf)