Heat stress in non-ferrous foundries.

In a previous paper (Turner, 1957) the results of a survey of the thermal environments in non-ferrous foundries were reported, reference was made to the index of heat stress proposed by Belding and Hatch (1955), and an indication was given of how this index could be used to evaluate the severity of the heat stress which might be encountered in foundries. A few observations were reported which showed that the required rate ofheat loss by evaporation which was predicted by the index was in fair agreement with the rate observed in a sample of foundry workers. It has been the purpose of the present study to investigate more closely the correlation between the predicted and observed rates of heat loss by evaporation under typical industrial conditions and to examine the applicability of the heat stress index for the assessment of such conditions.