Chemical:
Arsenic (inorganic arsenic compounds), Benzene, Chromium (hexavalent compounds), Diesel engine exhaust, Ethylene dibromide, Ethylene dichloride (1,2-Dichloroethane), Ethylene oxide, Lead, Lead and lead compounds, Methylmercury compounds, Nickel, Nickel compounds, Silica, crystalline (airborne particles of respirable size), Toluene