Pulmonary function and roentgenographic changes in granite dust exposure.
Theriault-GP; Peters-JM; Johnson-WM
Arch Environ Health 1974 Jan; 28(1):23-27
Chest roentgenograms of 784 granite shed workers are studied in relationship to lifetime dust exposure, ventilatory function, and smoking habits of the workers. Increase in dust exposure correlates with increase in size of rounded opacities and profusion. Irregular opacities are related more to smoking than to dust. Forced vital capacity (FVC) is lower for people with abnormal roentgenograms and decreases with greater profusion. Residual volume (RV) increased with smoking but not with dust exposure. No trend is shown for total lung capacity (TLC). A dose-response curve of dust on ventilatory function and on roentgenograms shows that the effects on ventilatory capacity took place 13.5 years before opacities on roentgenograms.
NIOSH-Publication; NIOSH-Contract; Contract-099-72-0066; X-Rays; Pulmonary-function; Respiratory-function-tests; Statistical-analysis; Smokers; Testing; Lung-disorders
Archives of Environmental Health