WILMINGTON, Del. AP – Three men who worked at a DuPont Co. nylon plant in Argentina sued the chemical manufacturer Wednesday, claiming that it failed to protect them from asbestos that has left them seriously ill.

The plaintiffs claim that DuPont has known of the dangers of asbestos exposure for decades but that workers at the plant in Mercedes, Argentina were exposed to the deadly substance as recently as 2004, before the plant was sold.