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References
- ↑ Harteis, SP; Alexander, DW; Harris, ML; Sapko, M; Weiss, ES (1 November 2016). "Review of Rock Dusting Practices in Underground Coal Mines". U.S. National Institute for Occupational Safety and Health. Retrieved 11 March 2019.
- ↑ Harris, Marcia L.; Sapko, Michael J.; Varley, Floyd D.; Weiss, Eric S. (August 2012). "Coal Dust Explosibility Meter Evaluation and Recommendations for Application" (PDF). Centers for Disease Control. Retrieved 30 March 2019.
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