Respirable coal mine dust: Geometric mean exposures by state, MSHA inspector and mine operator samples, 1979-2003
REL - recommended exposure limit mg/m3 - milligrams per cubic meter MRE - Mining Research EstablishmentNote: The NIOSH REL of 1 mg/m3 MRE for respirable coal mine dust was adopted in September of 1995. Geometric means are reported in MRE equivalent. See appendices for source description, methods, and agents.
Source: MSHA coal mine inspector and mine operator dust data.
Reference Number: 2008-296
Date Posted: June 2008