Chemical:
4-(N-Nitrosomethylamino)-1-(3-pyridyl)1-butanone, Arsenic (inorganic arsenic compounds), Benzene, Beryllium and beryllium compounds, Cadmium, Cadmium and cadmium compounds, Carbon disulfide, Chloroform, Cobalt metal powder, Di(2-ethylhexyl)phthalate, Dichloromethane (Methylene chloride), Lead and lead compounds, Naphthalene, Nickel and certain nickel compounds, Residual (heavy) fuel oils, Selenium sulfide, Soots, tars, and mineral oils (untreated and mildly treated oils and used engine oils), Toluene