 |
| |||
| upcast shaft | |||
| upper stack (двухшахтной доменной печи) | |||
| outlet shaft | |||
| верхняя шахта: 3 phrases in 3 subjects |
| Construction | 1 |
| Firefighting and fire-control systems | 1 |
| Mining | 1 |
|
| |||
| upcast shaft | |||
| upper stack (двухшахтной доменной печи) | |||
| outlet shaft | |||
| верхняя шахта: 3 phrases in 3 subjects |
| Construction | 1 |
| Firefighting and fire-control systems | 1 |
| Mining | 1 |