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HHE determination report no. HHE-73-135-138, Kaiser Permanente Cement Company, Lucerne Valley, California.
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HHE 73-135-138, 1974 May; :1-17
Free silica (7631869) and iron-oxide (1317619) dust are not considered to be toxic at the concentrations measured at a cement company. Although air concentrations of asbestos (1332214) were found to be below Federal Standards on a time weighted average basis, recommendations are made to protect workers from unnecessary exposure.
NIOSH-Publication; NIOSH-Author; HHE-73-135-138; Region-9; Hazards-Unconfirmed; Mineral-dusts; Airborne-particulates; Minerals; Air-contamination; Air-quality-control; Particulate-dusts; Abrasive-dusts; Environmental-contaminants; Author Keywords: asbestos; iron oxide; asbestos; cement
7631-86-9; 1317-61-9; 1332-21-4
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division