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Table 1 Exposure assessments of crystalline silica, chrome, manganese, and iron

From: Two Cases of Lung Cancer in Foundry Workers

  Crystalline silica (mg/m 3) Chromium (mg/m 3) Manganese (mg/m 3) Iron (mg/m 3)
Respirable quartz Respirable cristobalite
Shot blast 1 0.412 <LOD    
Shot blast 2 0.153     
Grinding (fettling) 1 0.161   0.007 0.013 0.995
Grinding (fettling) 2 0.281   0.013 0.003 0.105
Auto-molding 0.250 <LOD 0.005 0.003 0.103
Forklift truck 0.223   0.006 0.007 0.608
  1. LOD: limit of detection.