Table 1 Crystalline silica exposure levels investigated by the KWCWS
From: Silica exposure and work-relatedness evaluation for occupational cancer in Korea
Industry | Exposure levela | Concentration (mg/m3) |
|---|---|---|
Mining | High/Medium | 0.054 (rock drilling) 0.027 (coal face mining) |
Foundry work | High/Medium | 0.028 0.233 (factory using sand sprayer) |
Construction | High/Medium | 0.399 (concrete grinding) 0.042 (stone laying work) |
Stone quarrying | High | 0.060 |
Stone processing | High | 0.796 (dry process) 0.067 (wet process) |
Ceramics | Medium | 0.028 (diatomaceous earth) |
Briquetting | Medium | 0.048 |
Calcium carbonate manufacturing | Medium | 0.038 |
Paint manufacturing | Low | 0.007 |
Horse racetrack (horse training) | Low | 0.018 |
Subway work | Low | 0.006 |
Agriculture | Low | 0.014 (potato cultivation) |