Chemical:
1,6-Dinitropyrene, 3-Methylcholanthrene, 5-Nitroacenaphthene, 7H-Dibenzo[c,g]carbazole, Benzo[a]pyrene, Benzo[b]fluoranthene, Benzo[j]fluoranthene, Benzo[k]fluoranthene, Benz[a]anthracene, Chrysene, Creosotes, Dibenzo[a,e]pyrene, Dibenzo[a,h]pyrene, Dibenzo[a,i]pyrene, Dibenzo[a,l]pyrene, Dibenz[a,h]acridine, Dibenz[a,h]anthracene, Dibenz[a,j]acridine, Formaldehyde (gas), Soots, tars, and mineral oils (untreated and mildly treated oils and used engine oils)