 |
| |||
| high-ash coal (термин авторизован Igor Kravchenko-Berezhnoy Jannywolf) | |||
| coal with high ash content | |||
| bastard coal; bone coal; bony coal; impure coal | |||
| ash coal; dirty coal | |||
| cinder coal; cindery coal | |||
| зольный уголь: 3 phrases in 2 subjects |
| Geology | 2 |
| Mining | 1 |