Research Article
Underground Coal Mining: Relationship between Coal Dust Levels and Pneumoconiosis, in Two Regions of Colombia, 2014
Table 4
Relationship between coal dust (bituminous coal) and silica concentration risk levels and pneumoconiosis by department.
| | Cundinamarca | Boyacá | Number | % |
| Coal scale | | | | | Low | 4 | 26.7% | 1 | 11.1% | Medium | 10 | 76.9% | 0 | 0.0% | High | 37 | 43.0% | 41 | 27.9% | Severe | 29 | 43.9% | 19 | 44.2% | Total | 80 | 44.4% | 61 | 29.3% | Silica scale | | | | | Low | 11 | 31.4% | 8 | 34.8% | Medium | 12 | 50.0% | 0 | 0.0% | High | 6 | 50.0% | 3 | 15.8% | Severe | 42 | 45.2% | 20 | 21.3% | Critical | 20 | 39.2% | 38 | 41.8% | Total | 91 | 42.3% | 69 | 29.9% |
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