Asbestos: Geometric mean exposures and percent exceeding designated occupational exposure limits by MSHA metal/nonmetal district and state, MSHA samples, 1979-2003
- indicates incalculable field. PEL - permissible exposure limit REL - recommended exposure limit GM
Note: The MSHA PEL is 2 f/cc. The NIOSH REL is 0.1 f/cc. See appendices for source description and methods.
Source: MSHA metal/nonmetal mine data.
Reference Number: 2008-161
Date Posted: June 2008