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Diesel Particulate Matter Exposure of Underground Coal Miners
Federal Register · Proposed Rule · Apr 9, 1998
The PM2.5 annual limit is set at 15 g/m\3\, with a 24- hour ceiling of 65 g/m\3\. … 545 46,206 971 50,577 Surface....................... 776 4,705 370 28,314 1,146 33,019 Shp/Yrd/Mll/Plnt.............. 399
63 FR 17492RuleLabor Department
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