[Chronic bronchitis and respiratory capacity of the lungs in miners from a specific coal mine].

In the group of 3317 miners of one coal mine, who were employed for over 8 years, the prevalence of chronic bronchitis (ch.b.) and lung ventilation disorders was analysed.

[Analysis of the incidence of pneumoconiosis among coal miners].

Basing on the prevention system for pneumoconiosis in ++coal mining, an analysis of the disease incidence in the workers of a selected ++coal mine was performed. The subjects were 2.495 miners with the work period longer than 8 years and a group of 822 retired miners.