North Carolina Brick Industry Industrial Hygiene and Respiratory Disease Morbidity Survey, 1974-1975.
Anderson-LJ; Donaldson-HM; Jones-JH; Stringer-WT; Wallingford-KM
NIOSH 1980 Jun:88 pages
A medical and industrial hygiene survey was conducted at five building brick (SIC-3255) and two clay pipe (SIC-3259) manufacturing sites in North Carolina. Personal and area sampling was conducted for respirable free silica (14808607) at all sites, and for styrene (100425), benzene (71432), and ethyl-benzene (100414) at the pipe facilities. Medical screening included spirometry, chest radiography, sputum cytology, and a structured questionnaire. Respirable free silica concentrations ranged from 0.4 micrograms per cubic meter (microg/m3) to 692microg/m3 in brick facilities and 8 to 200microg/m3 in pipe facilities. The OSHA individual exposure standard is 50microg/m3. Exposures to benzene, styrene, and ethyl- benzene were low. Pulmonary function diagnosis, sputum cytology, chest roentgenogram, and respiratory disease questionnaire information provided little indication of excess disease associated with the brick facilities. Specific pulmonary function test results indicated a statistically significant decrement in the mean forced expiratory volume to forced ventilation capacity for black brick workers compared to the comparison group. The authors concluded that exposures to hazardous dusts are excessive and indicative of poor dust control practices in the brick and clay pipe industry.
NIOSH-Author; NIOSH-Survey; Physiological-response; Health-hazards; Dust-exposure; Exposure-limits; Sampling-methods; Dust-sampling; Respiratory-irritants; Diagnostic-tests; Field-Study; Region-4;
14808-60-7; 100-42-5; 71-43-2; 100-41-4;
NTIS Accession No.
NIOSH, Public Health Service, U.S. Department of Health and Human Services, Cincinnati, Ohio, NTIS PB83-181-735, 88 pages, 22 references