Monitoring and Sampling Approaches to Assess Underground Coal Mine Dust Exposures (2018) / Chapter Skim
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3 Exposure Monitoring and Sampling Approaches Used in Different Industrialized Countries
3 Exposure Monitoring and Sampling Approaches Used in Different Industrialized Countries
Pages 41-56
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From page 41... ...
Table 3-1 lists typical underground mining practices, mandated exposure limits, and required monitoring devices for several leading coal-producing countries. MONITORING AND SAMPLING APPROACHES REQURIED IN SELECTED COUNTRIES United States In 2015, total U.S.
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Poland 9 149,147 53% Longwall Exposure limits: 1 mg/m3 for RCMD containing free crystalline silica from 2% to 50%, 4 mg/m3 for total dust. Personal gravimetric sampling is used.
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. Mine operators are required to use the CPDM to monitor personal dust exposures of miners in designated occupations (DOs)
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, and other commercial organizations conduct and provide coal mine dust monitoring functions at a cost to the mines. Mine operators are required to review their safety and health management system and report monitoring results on a regular basis.
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. A number of recommendations were made: Identification and surveillance of coal mine dust respiratory disease should be explicit; Designated high-dust-exposure jobs should be linked to clearly stated frequency of health assessments and chest radiographs for workers in these areas; Medical staff performing the health assessments should be trained to perform high quality spirometry and chest x-ray B readings; Electronic data collection, aggregate analysis, and reporting should be implemented; and Plans for communication of medical surveillance results with individual miners and medical referral, as needed, should be developed (QLD Parliament, 2017c)
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Instead, emphasis is placed on the classification of workplace exposure types, personal registration of cumulative exposures for individual workers, and relocating miners to different work areas depending on their individual cumulative dust exposures. Based on the above-mentioned conclusions, the airborne concentration of crystalline silica in coal mines in Germany is not determined separately from RCMD.
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Monitoring and sampling follow a specific protocol, which has been developed by RAG (the major coal mining company) and the mining inspection institution of the State of North Rhine Westphalia (RAG DSK, 2006)
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The worker can continue to work under conditions where high dust exposures might occur. India In 2015, India was ranked third in the world in coal production at about 644 million short tons (EIA, 2017)
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The Safety Regulations in Coal Mines requires an exposure limit between 2 and 20 mg/m3 for total coal mine dust, and be
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. Exposure limits for coal mine dust containing crystalline silica from 2 to 50 percent are 4 mg/m3 for the total fraction and 1 mg/m3 for RCMD.
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informs the employer of a possible risk associated with a particular exposure and also the OMP will recommend what steps should be taken ranging from preventing or limiting further exposure to removing an employee from a dangerous environment. A COMPARISON OF REQUIREMENTS The occurrence of diseases caused by coal mine dust exposures has been recognized as an important occupational health problem by major coal-producing countries, and strategies for monitoring and controlling miners' exposures to reduce disease prevalence have been implemented in those countries.
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In most cases, other countries considered by the committee have RCMD exposure limits either equal to or greater than 2 mg/m3 and a silica exposure limit equal to or greater than 0.1 mg/m3. Several states in Australia also have set exposure limits for the inhalable size fraction of coal mine dust particles.
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7. The commonalities among multinational exposure monitoring approaches suggest po tential opportunities for using compliance data for scientific investigations of linkages between miners' exposure monitoring data and medical surveillance results collected from across a broad range of underground mining conditions in different countries.
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2017. Coal Mine Dust Exposure Monitoring and Sampling in Underground Mines in South African Mining Industry.
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2006. Estimation of respirable dust exposure among coal miners in South Africa.
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2017. Presentation at the Sixth Meeting on Occupational Exposure to Respirable Coal-Mine Dust, October 5-6, 2017, Washington, DC.
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