A former engineer at DuPont has claimed that for two decades the chemicals company concealed test results showing leaching of toxic chemicals from a paper coating used to give grease resistance to paper for things like popcorn bags, candy wrappers and pizza box liners. This allegation has come from Glenn Evers, who lost his job in 2002 at DuPont due to restructuring. The chemical involved is Zonyl rp, a widely used grease-resistant coating. Zonyl rp is still in use. The company was to notify the Food and Drug Administration but it never happened, Evers claimed.