[Hazards involved in the working stages of a plant for the manufacture of cement-asbestos].

During a research into a factory for the manufacture of cement-asbestos pipes and slabs in which 533 workers were employed the AA. have taken an interest, over all, in the working risks related to dusts, suggesting the more suitable defence principles in various working places. We can consider the remarks, though effected in different conditions, sure in the environment conditions (of atmosphere, work and materials) in which they were carried out. More reliable results could be obtained with various measurements taken from time to time. About the entity of the dust risks and especially in relation to a priority production of preventive measures, we must consider, before all, the dusts of asbestos, then the ones of cement-asbestos and at last, the ones of cement; naturally for the dusts of the same type the greatest risk is tied to the manufactures that produce them in greater amount.