| Exposure zone | Plant department associated with exposure zone | Number of TEM samples | ||
| 1 | Preparation | 6 | ||
| 2 | Carding | 11 | ||
| 3 | Ring spinning | 11 | ||
| 4 | Mule spinning | 11 | ||
| 5 | Foster winding | 5 | ||
| 6 | Twisting | 6 | ||
| 7 | Universal winding | 9 | ||
| 8 | Heavy weaving | 11 | ||
| 9 | Light weaving | 11 | ||
| 10 | Finishing operations | 3 |