NIOSHTIC-2 Publications Search
Health hazard evaluation report: HETA-89-196-2023, Hazen Research, Inc., Golden, Colorado.
Hales TR; Gunter BJ
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 89-196-2023, 1990 Mar; :1-14
As a result of a request from Hazen Research, Inc. (SIC-1041), Golden, Colorado, an evaluation was made of possible employee exposure to lead (7439921) in the company's fire assay operations. The fire assaying process separates noble metals from their ores using dry reagents and heat. The facility was run by one full time analyst. One personal breathing sample and three general area air samples were taken. Four short term area samples were collected in the fire assay lab. Questionnaires were completed by the assayist and one office employee, both of whom also provided blood samples for analysis. The personal breathing zone concentration of lead was 10 micrograms/cubic meter (microg/m3) as an 8 hour time weighted average, well below the OSHA action level of 30microg/m3. Blood lead concentrations were less than 40 micrograms/deciliter. Symptoms consistent with lead exposure were not reported. However, the authors conclude that a potential for exposure existed; implementation of specific portions of the OSHA lead standard which were not in effect at the time of the visit is recommended.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-89-196-2023; Hazard-Confirmed; Region-8; Lead-poisoning; Blood-analysis; Biological-monitoring; Chemical-analysis; Laboratory-workers; Author Keywords: Gold Ores; Fire Assay; Gold Assay; Lead; Blood Lead; FEP; ZPP; Litharge
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division