No abstract available
MeSH terms
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Air Pollutants, Occupational / analysis*
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Coal / analysis*
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Dust / analysis*
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Environmental Monitoring / legislation & jurisprudence*
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Humans
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Lung Diseases / prevention & control
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Occupational Diseases / prevention & control
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United States
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West Virginia
Substances
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Air Pollutants, Occupational
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Coal
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Dust