Industrial sources of metals.
D000395:Air Pollutants, Occupational / Q000032:analysis*; D004391:Dust / Q000032:analysis; D004785:Environmental Pollutants / Q000032:analysis; D008669:Metallurgy; D008670:Metals / Q000032:analysis*; D012037:Refuse Disposal / Q000379:methods; D013232:Steel
D000395:Air Pollutants, Occupational; D004391:Dust; D004785:Environmental Pollutants; D008670:Metals; D013232:Steel