A comparative study of respiratory function in female non-smoking cotton and jute workers.

364-368. To compare the effect of cotton and jute dust, respiratory symptoms were studied and respiratory function measured in 60 cotton and 91 jute non-smoking female workers of similar age distribution, similar length of exposure to dust, and exposed to similar respirable airborne dust concentrations. Cotton workers had a significantly higher prevalence of byssinosis, of persistent cough, and of dyspnoea (P < 0·01) than jute workers.

Cigarette smoking: objective evidence for lung damage in teen-agers.

High school students with 1 to 5 years' smoking experience have excessive cough, sputum production, and shortness of breath. When maximum expiratory flow is plotted against maximum expired volume, the curves of nonsmokers and smokers differ in shape. The smokers have lower flow rates at mid-vital capacity and at lower lung volumes.

Peak flow rate in relation to forced expiratory volume in hemp workers.

159-163. Measurements of the forced expiratory volume in one second (FEV) and the peak expiratory flow rate (PEF) were made in 99 non-smoking female hemp workers before and after the shift. A significant mean reduction of both FEV and PEF (P<0·01) over the shift was found in workers both with and without byssinosis but the relative reductions of PEF were more pronounced (FEV 15·3%; PEF 20·8%).

Byssinosis, chronic bronchitis, and ventilatory capacities in workers exposed to soft hemp dust.

A study was made of 93 women and 13 men employed in the spinning department of a factory in Yugoslavia processing soft hemp (). There were seven occupational groups, with average concentrations of total airborne hemp dust ranging from 2·9 mg./m.