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    Estimation of quantitative levels of diesel exhaust exposure and the health impact in the contemporary Australian mining industry

    Access Status
    Fulltext not available
    Authors
    Peters, S.
    de Klerk, N.
    Reid, Alison
    Fritschi, Lin
    Musk, A.
    Vermeulen, R.
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Peters, S. and de Klerk, N. and Reid, A. and Fritschi, L. and Musk, A. and Vermeulen, R. 2016. Estimation of quantitative levels of diesel exhaust exposure and the health impact in the contemporary Australian mining industry. Occupational and Environmental Medicine. 74 (4): pp. 282–289.
    Source Title
    Occupational and Environmental Medicine
    DOI
    10.1136/oemed-2016-103808
    ISSN
    1351-0711
    School
    Epidemiology and Biostatistics
    URI
    http://hdl.handle.net/20.500.11937/3693
    Collection
    • Curtin Research Publications
    Abstract

    Objectives To estimate quantitative levels of exposure to diesel exhaust expressed by elemental carbon (EC) in the contemporary mining industry and to describe the excess risk of lung cancer that may result from those levels. Methods EC exposure has been monitored in Western Australian miners since 2003. Mixed-effects models were used to estimate EC levels for five surface and five underground occupation groups (as a fixed effect) and specific jobs within each group (as a random effect). Further fixed effects included sampling year and duration, and mineral mined. On the basis of published risk functions, we estimated excess lifetime risk of lung cancer mortality for several employment scenarios. Results Personal EC measurements (n=8614) were available for 146 different jobs at 124 mine sites. The mean estimated EC exposure level for surface occupations in 2011 was 14 mg/m3 for 12 hour shifts. Levels for underground occupation groups ranged from 18 to 44 mg/m3. Underground diesel loader operators had the highest exposed specific job: 59 mg/m3. A lifetime career (45 years) as a surface worker or underground miner, experiencing exposure levels as estimated for 2011 (14 and 44 mg/m3 EC), was associated with 5.5 and 38 extra lung cancer deaths per 1000 males, respectively. Conclusions EC exposure levels in the contemporary Australian mining industry are still substantial, particularly for underground workers. The estimated excess numbers of lung cancer deaths associated with these exposures support the need for implementation of stringent occupational exposure limits for diesel exhaust.

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