 |
| drill-hole: 230 phrases in 28 subjects |
| Automated equipment | 7 |
| Caspian | 1 |
| Construction | 4 |
| Drilling | 8 |
| Electronics | 3 |
| Energy industry | 2 |
| General | 9 |
| Geology | 7 |
| Geophysics | 4 |
| Gold mining | 10 |
| Household appliances | 1 |
| Informal | 6 |
| Makarov | 21 |
| Mathematics | 1 |
| Mechanic engineering | 1 |
| Medical appliances | 1 |
| Military | 11 |
| Mining | 28 |
| Non-destructive testing | 1 |
| Oil / petroleum | 24 |
| Oil and gas | 19 |
| Oil and gas technology | 7 |
| Oilfields | 17 |
| Politics | 1 |
| Road works | 3 |
| Sakhalin | 3 |
| Technology | 26 |
| Transport | 4 |