| Frequency | Work sector | ||||||
| Stone quarry | Stone processing | ||||||
|
| Blaster | Driller | Breaker | Labourer | Crusher | Breaker | Labourer |
| 0 | 6 (40.0 ) | 20 (54.1) | 5 (33.3) | 34 (45.9) | 5 (71.4) | 5 (71.4) | 170 (74.2) |
| 1 | 5 (33.3) | 7 (18.9) | 3 (20) | 10 (13.5) | 1 (14.3) | 0 (0.0) | 11 (4.8) |
| 2 | 2 (13.3) | 1 (2.7) | 1 (6.7) | 3 (4.1) | 0 (0.0) | 0 (0.0) | 3 (1.3) |
| 3 | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (0.4) |
| >3 | 2 (13.3) | 9 (24.3) | 6 (40) | 27 (36.5) | 1 (14.3) | 2 (28.6) | 44 (19.2) |
| Total (%) | 15 (100.0) | 37 (100.0) | 15 (100.0) | 74 (100.0) | 7 (100.0) | 7 (100.0) | 229 (100.0) |