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| gas coal | |||
| gas-coal | |||
| gas carbon | |||
| bituminous coal; bottle coal; caking coal; coking coal; light coal; lignitous coal (Kohle mit 75 bis 84 % Kohlenstoffgehalt waf); lomonite-flame gas coal | |||
| gas coal (high-grade bituminous coal) | |||
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Gaskohle : 2 phrases, 1 sujets |
| Exploitation minière | 2 |