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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

Archived Version