Respirable coal mine dust: Geometric mean exposures by state, MSHA inspector and mine operator samples, 1979-2003
REL - recommended exposure limitmg/m3 - milligrams per cubic meterMRE - Mining Research Establishment Note: 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: 2007F02-08
Date Posted: June 2008
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