By Catherine Komp
The NewStandard

Nearly two months after DuPont claimed to have evidence that a chemical it uses in the Teflon-manufacturing process is safe for workers, the chemical giant still refuses to release its full findings to the public.

Now unions have joined in pressuring DuPont to release the study and other information on the health effects of PFOA, a chemical used to make Teflon that the Environmental Protection Agency says is potentially harmful to humans.