Respirable quartz: Geometric mean metal/nonmetal mining exposures by state, MSHA samples, 1979-2003
mg/m3 - milligrams per cubic meterMSHA - Mine Safety and Health Administration
Note: See appendices for source description, methods, and agents.
Source: MSHA metal/nonmetal mine data.
Reference Number: 2007F03-08
Date Posted: June 2008
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