DPM Hazard  ACGIH: 0.15 mg/m3, A2 (suspected human carcinogen) (1995); 0.05 mg/m3, A2 (1999); 0.05 mg/m3, A2 (2000); 0.02 mg/m3, (elemental carbon), A2 (2001); 0.02 mg/m3, A2 (2002); Withdrawn (2003); ACGIH- TLV for DPM –Under Notice of Intended Change (NIC)  January 19, 2001- MSHA (USA) Risk Assessment with respect to health effects, was: Exposure to DPM can materially impair miner health or functional capacity.
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