[Incidence of cardiovascular diseases in the workers of deep coal mines]

Examined were 1345 miners working in deep coal mines (temperature 27 degrees C and higher) and non-deep mines (temperature not exceeding 26 degrees C). It was found that increased temperature against the background of other noxious factors of the mine environment and strenuous physical work further the development of diseases of the cardio-vascular system (hypertensive disease, vegetovascular dystonia, ischemic heart disease).