 |
| dust coal: 64 phrases in 19 subjects |
| Automobiles | 1 |
| Cement | 2 |
| Coal | 7 |
| Combustion gas turbines | 1 |
| Construction | 1 |
| Energy industry | 13 |
| Firefighting and fire-control systems | 1 |
| General | 3 |
| Geology | 6 |
| Informal | 1 |
| Makarov | 5 |
| Mining | 3 |
| Natural resourses and wildlife conservation | 1 |
| Occupational health & safety | 1 |
| Rail transport | 1 |
| Road works | 1 |
| Silicate industry | 4 |
| Technology | 11 |
| Transport | 1 |