alexa Risks of silicosis in coalworkers exposed to unusual concentrations of respirable quartz
Healthcare

Healthcare

Occupational Medicine & Health Affairs

Author(s): B G Miller, S Hagen, R G Love, C A Soutar, H A Cowie

Abstract Share this page

OBJECTIVES: To describe the radiographic changes in coalworkers exposed to unusual concentrations of respirable quartz during the 1970s, and to relate these to exposure measurements.

METHODS: Men who had worked at one Scottish colliery during the 1970s were invited to a health survey. Chest radiographs were taken from 547 subjects. Classifications of these films under the International Labour Organisation (ILO) 1980 scheme were related, by logistic regression, to existing data on individual men's exposures to respirable dust and quartz.

RESULTS: Taking the median of the three readers' results on profusion of small opacities, 203 men (38%) showed progression of at least one profusion category on the 12 point scale, from the various 1970s surveys to the follow up in 1990-1. A total of 158 men (29%) had a profusion of at least 1/0, and 47 (8.6%) of at least 2/1 at the follow up survey. Large opacities were recorded as present by at least two readers for 14 (2.6%) of the men. Profusion of small opacities was strongly related to exposures experienced in the 1970s, and more strongly for quartz than for the non-quartz fraction of the dust. Estimates of risk are presented over the range of quartz exposures experienced.

CONCLUSIONS: The quartz exposures experienced by some men at this colliery have caused considerable progression of radiographic abnormalities since exposure ended. The data accumulated offer opportunities for further more detailed analyses to inform debate on occupational limits for quartz exposures, both in collieries and in other industries where there is exposure to quartz in mixed dust.

This article was published in Occupational & Environmental Medicine and referenced in Occupational Medicine & Health Affairs

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • 6th International Conference and Exhibition on Occupational Health & Safety

    September 13-14, 2017 Dallas, Texas, USA
  • Global Experts Meeting on Public Health and Nutrition
    October 09-11, 2017 Dubai, UAE
  • 13th International Conference on Occupational Toxicology and Industrial Health
    October 16-17, 2017 Dubai,UAE
  • 38th International Conference on Nursing & Healthcare
    October 16-18,2017 New York, USA
  •  46th Global Nursing and Healthcare Conference
    Dec 06-07, 2017 Sao Paulo, Brazil

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords