Factory | Inhalable Dusts (mg/m3) | Respirable Dusts (mg/m3) | Coarse Fraction (mg/m3) | ||||||
---|---|---|---|---|---|---|---|---|---|
 | Withering | Panning | Ball-Rolling | Withering | Panning | Ball-Rolling | Withering | Panning | Ball-Rolling |
A | 0.81 | 1.25 | 2.51 | 0.19 | 0.74 | 0.29 | 0.62 | 0.51 | 2.22 |
B | 0.93 | 3.24 | 2.32 | ND* | 0.74 | 0.27 | 0.93 | 2.5 | 2.05 |
C | 1.19 | 1.79 | 5.61 | 0.41 | 0.60 | 0.55 | 0.78 | 1.19 | 5.06 |
D | 1.13 | 1.83 | 2.64 | 0.27 | 1.04 | 0.25 | 0.86 | 0.79 | 2.39 |
Mean ± SD | 1.01 ± 0.18 | 2.03 ± 0.85 | 3.27 ± 1.57 | 0.21 ± 0.17 | 0.78 ± 0.19 | 0.34 ± 0.14 | 0.80 ± 0.13 | 1.25 ± 0.88 | 2.93 ± 1.43 |