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Respirable quartz: Geometric mean exposures and percent exceeding designated occupational exposure limits by MSHA coal mine district and state, MSHA inspector and mine operator samples, 1982-2003

Respirable quartz: Geometric mean exposures and percent exceeding designated occupational exposure limits by MSHA coal mine district and state, MSHA inspector and mine operator samples, 1982-2003

- indicates incalculable field.    PEL - permissible exposure limit    REL - recommended exposure limit    GM

Note: The MSHA PEL is 2 mg/m3 MRE for respirable dust containing less than or equal to 5 percent quartz. The PEL is adjusted using the formula [(10 mg/m3 MRE) / (% quartz)] for respirable dust containing greater than 5 percent quartz. See appendices for sourc

Source: MSHA coal mine inspector and mine operator quartz data.

Citation:

NIOSH 2008. Work-Related Lung Disease Surveillance System (eWoRLD). 2008-202 U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Respiratory Health Division, Morgantown, WV. Available at: <https://wwwn.cdc.gov/eworld/Data/202> December 9, 2016.

Reference Number: 2008-202

Date Posted: June 2008

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