Pneumoconiotic agents: Percent of exposures 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 MSHA
Note: See appendices for source description, methods, and agents.
Source: MSHA metal/nonmetal mine data.
Reference Number: 2008-505
Date Posted: June 2008