R Puntoni et al. The Lancet. August (2001) Vol. 358 #9281 p 562.
A study of a proposed association between occupational exposure to carbon black and, bladder cancer. Carbon black has been assessed by IARC as being a possible human carcinogen.
2286 long shore men (Dockers) employed between 1933 and 1980 were the subjects of this study. Of these 596 spent a significant time carrying paper sacks full of carbon black. The work was very dusty.
Cases were identified using the local cancer registry for a period between 1986 and 1996.
Occupational hygienists assessed exposure as having been: 858 low, 709 moderate and 534 high for members of this population.
208 cancers in the cohort, were recorded in the study period. In detail: