No abstract available
MeSH terms
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Air Pollutants, Occupational / adverse effects*
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Coal Mining
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Humans
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National Institute for Occupational Safety and Health, U.S.
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Occupational Exposure / adverse effects
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Occupational Exposure / prevention & control
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Respiratory Protective Devices
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Silicon Dioxide / adverse effects*
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Silicon Dioxide / chemistry
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Silicosis / complications
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Silicosis / physiopathology*
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Silicosis / prevention & control
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United States
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United States Occupational Safety and Health Administration
Substances
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Air Pollutants, Occupational
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Silicon Dioxide