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Asbestos: Geometric mean exposures by major industry division, MSHA and OSHA samples, 1979-2003


PEL - permissible exposure limit    REL - recommended exposure limit    f/cc - fibers per cubic centimeter    M

Note: See appendices for source description, methods, and agents.

Source: MSHA metal/nonmetal mine data. OSHA Integrated Management Information System.

Reference Number: 2008-129

Date Posted: June 2008

Archived Version