Selected pneumoconiotic agents: Geometric mean exposures and percent exceeding designated occupational exposure limits, MSHA and OSHA samples, 1979-2015
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- indicates incalculable field. PEL - permissible exposure limit REL - recommended exposure limit GM - geometric mean mg/m3 - milligrams per cubic meter ug/m3 - micrograms per cubic meter mppcf - millions of particles per cubic foot MSHA - Mine Safety and Health Administration OSHA - Occupational Safety and Health Administration
Note:
Pneumoconiotic agents with at least 300 total samples in MSHA or OSHA for the time period 1979-2015 are presented.
From March 1, 1989 to March 22, workforce differed from those employed before and after those dates.
NIOSH has designated beryllium and titanium dioxide as potential occupational carcinogens, and recommends reducing exposures to as low as feasible.
The % > REL cannot be calculated for talc because the REL is in units of mg/m3, but MSHA samples and analyzes the talc using units of millions of particles per cubic foot (mppcf).
For welding fumes (OSHA), the % > PEL is based on fewer samples than the number reported for the years 1989 and 1993 because OSHA adopted a PEL for welding fumes that was enforced from March 1, 1989 through March 22, 1993. Samples collected in 1989 before March 1, or in 1993 after March 23 are not compared to a PEL.
See appendices for source description, method and agents.
Source:
MSHA metal/nonmetal mine data. OSHA Integrated Management Information System. OSHA Information System.
Citation:
NIOSH 2019. Work-Related Lung Disease Surveillance System (eWoRLD). 2019-945 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/945> March 28, 2024.
Reference Number: 2019-945
Date Posted: February 2019