[Characterization of coke derivate distillation departments in coke plants. Hygienic and ergonomic conditions].

The studies were carried out in three coke plants mostly with the use of individual dosimetric methods but also with the stationary method. They revealed the values 2-5 times exceeding the MAC of the tar substances in the air of all workposts, and benzo(a)pyrene at several posts only. The other toxic substances like benzene homologous and benzologous and dust exceeded the MAC value only incidentally so that the workers of this department were less exposed than the people employed directly at the coke production. The ergonomic examinations did not reveal any excess of energetic expenditure or physiological cost. The results of medical studies will be presented in further papers.