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Respirable quartz: Geometric mean coal mining exposures by state, MSHA inspector and mine operator samples, 1982-2003


mg/m3 - milligrams per cubic meter    MRE - Mining Research Establishment MSHA - Mine Safety and Health Administration

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

Source: MSHA coal mine inspector and operator quartz data.

Reference Number: 2008-307

Date Posted: June 2008

Archived Version