Exposure to Dust in the Vermont Granite Industry: An Epidemiologic Investigation.
Peters-JM; Burgess-WA; Theriault-GP; Murphy-RL; Fine-LJ; Goldin-A; DiBerardinis-L; Ashe-HB
National Institute for Occupational Safety and Health (Unpublished report) 1972:69 pages
A cross sectional epidemiologic investigation was made of 863 granite workers and their exposure to granite dust. Objectives of the study were to determine current exposures to granite dust and quartz (1317799) in the Vermont granite industry, to determine if there is an excess of pulmonary disease in Vermont granite workers, to determine the relationship of dust exposure to disease, to determine relationships of X-ray findings to pulmonary-function abnormalities in the population surveyed, and to discover interactions (if any) between tobacco smoking and dust exposure. Results demonstrated an adverse effect of granite dust exposure on human health, with impairment of pulmonary function probably occurring before X-ray changes. The estimation of safe exposures may be performed based on regression equations and on prediction equations. It was concluded that from 35 to 40 total dust exposure years are clearly harmful to health based on current standards for air quality. It was recommended that the safe level of exposure be set at 300 micrograms/m cubed of respirable dust or 20 micrograms/m cubed of respirable quartz in order to eliminate or decrease pulmonary disease caused by occupational exposure.
NIOSH-Contract; Contract-099-71-0003; Radiology; Etiology; Epidemiology; Quarrying; Hazards; Respiration;
National Institute for Occupational Safety and Health (Unpublished report)