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Synonyms: Anthracite coal dust; Bituminous coal dust; Lignite coal dust
dark-brown to black solid dispersed in air
OSHA Permissible Exposure Limit (PEL):
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): Anthracite - 0.4 mg/m3 TWA, Bituminous - 0.9 mg/m3 TWA -- Respirable Fraction, Appendix A4 (Not Classifiable as a Human Carcinogen)
Potential Symptoms: Chronic Bronchitis; Decreased Pulmonary Function; Emphysema
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