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Coal Workers' Pneumoconiosis: Coal Mine Dust Exposures

Respirable coal mine dust: Geometric mean exposures by state, MSHA inspector and mine operator samples, 1979-2003
Figure showing 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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