Respiratory Symptoms in Chrysotile Asbestos Mine and Mill Workers of Quebec

Abstract

A standard questionnaire was administered to an age-stratified random sample of 1,015 current male employees in the Quebec chrysotile asbestos mines and mills, The prevalence of persistent cough and phlegm (bronchitis) was related to age and smoking habits and perhaps, in nonsmokers and light smokers, also to dust exposure. Breathlessness on exercise was related to age and dust exposure but not to smoking.