HHE Report No. HETA-82-302-1461, East Penn Foundry, Macungie, Pennsylvania.
Landrigan-PJ; Lewis-FA; Cherniack-MG; Catlett-LR
NIOSH 1984 May:37 pages
The incidence of silicosis among workers at the East Penn Foundry (SIC-3321) in Macungie, Pennsylvania was surveyed on October 12, 1982 and October 6, 1983. The evaluation was requested by the International Molders and Allied Workers Union, Local 295, on behalf of about 100 workers potentially exposed to free silica (7631869). Industrial hygiene records and medical records were reviewed. Respirable dust and free silica exposures were assessed. Earlier chest X-rays were read again for signs of silicosis and disease progression. Silica exposures for the core setters, makers, muller operators, shake out operators, and permanent mold fitting/mold cleaning operators exceeded the NIOSH recommended limit of 50 micrograms per cubic meter. Current respirable dust concentrations were below the OSHA limit of 10 milligrams per cubic meter. The silica content of settled dust ranged from 7.4 percent for core setting to 78 percent for fitting conveyor shake out. Radiologic evidence of silicosis was found in almost 10 percent of the workers, and incidence was related to duration of exposure. The authors conclude that a serious exposure hazard to free silica exists at this foundry, along with a high prevalence of silicosis. They recommend exposure control measures including material substitution, use of ventilation, and exposure monitoring. Workers should be given preplacement and periodic medical evaluations. Work practices should be improved and workers should be educated about the hazards of silica. Warning labels should be placed on packaged free silica.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; Hazards-Confirmed; Foundries; Region-3; Silica-dusts; Industrial-hygiene; Chest-X-rays; Exposure-levels; Metal-industry-workers; Air-quality-measurement; HETA-82-302-1461;
Hazard Evaluation and Technical Assistance;
NTIS Accession No.
Hazard Evaluations and Technical Assistance Branch, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, Report No. HETA-82-302-1461, 37 pages, 19 references