1,3-Butadiene
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)
4-Nitrobiphenyl
Acetaldehyde
Aniline
Arsenic (inorganic arsenic compounds)
Benzene
Beryllium and beryllium compounds
Cadmium
Cadmium and cadmium compounds
Chromium (hexavalent compounds)
Cobalt [II] oxide
Di(2-ethylhexyl)phthalate
Diesel engine exhaust
Formaldehyde (gas)
Lead
Lead and lead compounds
Mercury
Mercury and mercury compounds
Methylmercury compounds
Nickel
Nickel compounds
Polychlorinated dibenzo-p-dioxins
Polychlorinated dibenzofurans
Silica, crystalline (airborne particles of respirable size)
Toluene
