Pulmonary air space size in coal miners.

Details

• Personal Author:
  Hankinson, John L. ; Lapp, N. Leroy ; Palmes ED
• Description:
  The relationship between differences in aerosol deposition patterns and variations in response to coal mine dust was investigated. Data on pulmonary functions, including chest radiographs and spirometric results, was collected from 127 working coal miners (SIC-1211). A questionnaire on occupational, smoking, and respiratory history was administered. Subjects inhaled 1.0 liter of aerosol, held their breath for times ranging from 0 to 30 seconds, and exhaled. Inhaled and exhaled aerosol concentrations were measured by a light scattering technique. Groups of miners with radiographic opacities were older and had spent more years working underground than miners with no radiographic lesions. Maximum expiratory flow at 50 percent of vital capacity was reduced only in miners with radiographic lesions. Miners with no pneumoconiosis or with type-q opacities had a mean aerosol halflife similar to control values. Miners with type- p opacities had a mean aerosol halflife that was significantly longer than controls and miners with type-q opacities. Miners with type-p opacities had a smaller average percentage of aerosol recovered at the end of a nonbreathholding maneuver. This phenomenon was also associated with cigarette smoking and symptoms of bronchitis. The authors conclude that underground coal miners with type-p pneumoconiosis have narrower small conducting airways and abnormally large peripheral air spaces. They suggest that these differences are related to the reaction of coal miners to dust deposition and cigarette smoking. [Description provided by NIOSH]
• Subjects:
  Dust Lung Lung Diseases Mining Occupational Health Respiratory System Respiratory Tract Diseases Safety Surveys And Questionnaires
• Keywords:
  Dispersion Health-surveys Lung-disorders Mine-workers Mineral-dusts NIOSH-Author Pulmonary-function Pulmonary-system-disorders
• ISSN:
  0003-0805
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  New York ; OSHA Region 2 ; OSHA Region 3 ; 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:
  391-397
• Volume:
  119
• Issue:
  3
• NIOSHTIC Number:
  nn:00118446
• Citation:
  Am Rev Respir Dis 1979 Mar; 119(3):391-397
• Federal Fiscal Year:
  1979
• NORA Priority Area:
  Pulmonary System Disorders
• Peer Reviewed:
  True
• NAICS and SIC Codes:
  1211 - Bituminous Coal and Lignite - (SIC)
• Source Full Name:
  American Review of Respiratory Disease
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7b4a3a48ab0323dc3c988586d07566f6d26f338f306e3a340b71e56ad2eda43587a707c3fd83ad669a1af871041b7b50e1f469eac33d86fa11ef1db3f04e16cf
• Download URL:
  https://stacks.cdc.gov/view/cdc/184487/cdc_184487_DS1.pdf
• File Type:
  [PDF - 490.28 KB ]