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Respirable Dust Exposure in Western Australian Mining: Trends, Variability, and Implications for Occupational Health
Renee N Carey1,2, Susan Peters3, Nicholas de Klerk1
1School of Population and Global Health, University of Western Australia, Perth, Western Australia, Australia.
American Journal of Industrial Medicine
|May 4, 2026
Summary
Respirable dust exposure in Western Australian mines significantly decreased by 3.51% annually from 1986-2014. Despite overall improvements, some mining jobs still show higher dust levels, indicating a need for continued control measures.
Area of Science:
- Occupational Health
- Environmental Science
- Mining Engineering
Background:
- Mining workers face significant respiratory hazards from airborne dust.
- While silica dust exposure is studied, overall respirable dust exposure trends in mining are less understood.
Purpose of the Study:
- To analyze trends in measured respirable dust exposure levels in Western Australian mines from 1986 to 2014.
- To identify variations in exposure trends across different mine types and job roles.
Main Methods:
- Analysis of 109,442 personal respirable dust measurements.
- Data collected from Western Australian mines between 1986 and 2014.
- Mixed-effects regression modeling, adjusting for various sampling and mine characteristics.
Main Results:
- Overall geometric mean respirable dust concentrations decreased by an average of 3.51% annually.
- Highest exposure levels were noted in iron ore and exploration mining.
- Exploration activities showed a particularly steep decline in exposure levels over time.
Conclusions:
- Respirable dust exposure in Western Australian mines has substantially decreased over three decades.
- Persistent higher exposures in certain jobs and activities suggest existing controls may need enhancement.
- Further measures are indicated to address residual high exposure risks in the mining sector.
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