HETA Report No. TA-80-000-105, Forest Service, USDA, Spokane, Washington.

Details

• Personal Author:
  Sanderson, Wayne T.
• Description:
  In response to a request from the U.S. Forestry Service (SIC-0851), an investigation was conducted by NIOSH to evaluate the exposure of Forest Service personnel to volcanic ash after the May 18, 1980 eruption of Mount St. Helens. Forest workers in southwestern Washington State were monitored in June and September, 1980 for exposure to airborne dust, total dust, and trace metals. Respirable crystalline silica (14808607) dust exposure was estimated by sieving bulk samples to particles less than 10 micrometers in diameter. Nine of 40 measurements obtained from forestry workers exposed to respirable dust were greater than 1.00mg/m3 during the first survey. The NIOSH recommended exposure level to respirable dust containing 5.5% crystalline silica was 0.91mg/m3. No respirable dust measurements obtained in late summer were above the NIOSH recommended exposure level. The author concludes that forestry workers exposed to dust concentrations below the recommended levels have little risk in developing chronic respiratory impairment from this exposure; however, the recommended exposure levels may have certain limitations and future volcanic activity may increase risk. The author recommends that working conditions should be reassessed in future volcanic eruptions. [Description provided by NIOSH]
• Content Notes:
  in NTRL, no pdf
• Subjects:
  Dust Forestry Occupational Exposure Occupational Health Safety Silicon Dioxide
• Keywords:
  NIOSH-Author; NIOSH-Technical-Assistance-Report; Region-10; TA-80-000-105; Hazard-Confirmed; Dust-inhalation; Forestry-workers; Occupational-exposure; Respirable-dust; Mineral-dusts; Silica-dusts; Volcanic-ash
• Series:
  Health Hazard Evaluation Reports (HHE)
• Subseries:
  Technical Assistance Field Studies
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Field Study ; Technical Report
• Place as Subject:
  OSHA Region 10 ; OSHA Region 3 ; Washington ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRDS - Division of Respiratory Disease Studies
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-23
• NIOSHTIC Number:
  nn:00209880
• NTIS Accession Number:
  PB93118008
• Citation:
  Morgantown, WV: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, TA 80-000-105, 1982 Mar; :1-23
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7)
• Federal Fiscal Year:
  1982
• Peer Reviewed:
  False
• Source Full Name:
  National Institute for Occupational Safety and Health
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/232754/cdc_232754_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]