Le '''Coal Mine''' produit du [[Coal|charbon]] dans votre ville. Son amélioration augmente la production de charbon.
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La Coal Mine produit du Coal dans votre ville. L'améliorer augmente la production de Coal.
Niveaux
Coût d'amélioration, temps et puissance par niveau (coûts en ressources issus des données officielles, affichés en abrégé).
| Niveau |  Viande |
 Bois |
 Charbon |
 Fer |
Temps | Puissance |
|---|---|---|---|---|---|---|
| 1 | — | 30 | — | — | 2s | 40 |
| 2 | — | 45 | — | — | 3s | 76 |
| 3 | — | 200 | — | — | 10s | 130 |
| 4 | — | 450 | 90 | — | 35s | 202 |
| 5 | — | 1.9k | 380 | — | 1m 10s | 310 |
| 6 | — | 4.8k | 960 | 240 | 2m 20s | 472 |
| 7 | — | 17k | 3.4k | 865 | 4m 45s | 706 |
| 8 | — | 31k | 6.3k | 1.5k | 7m 10s | 940 |
| 9 | — | 65k | 13k | 3.2k | 10m 30s | 1,174 |
| 10 | — | 110k | 23k | 5.7k | 14m | 1,514 |
| 11 | 110k | 110k | 23k | 5.9k | 18m | 1,854 |
| 12 | 150k | 150k | 30k | 7.5k | 21m 30s | 2,194 |
| 13 | 210k | 210k | 42k | 10k | 26m | 2,768 |
| 14 | 280k | 280k | 56k | 14k | 33m 30s | 3,342 |
| 15 | 410k | 410k | 83k | 20k | 43m | 3,916 |
| 16 | 530k | 530k | 100k | 26k | 1h 13m | 4,724 |
| 17 | 830k | 830k | 160k | 41k | 1h 27m | 5,532 |
| 18 | 1.1M | 1.1M | 220K | 56K | 1h 45m | 6,340 |
| 19 | 1.4M | 1.4M | 280K | 70K | 2h 38m | 7,488 |
| 20 | 1.9M | 1.9M | 300k | 96k | 3h 17m | 8,636 |
| 21 | 2.4M | 2.4M | 490K | 120K | 4h 16m | 9,784 |
| 22 | 3.2M | 3.2M | 640K | 160K | 6h 25m | 11,506 |
| 23 | 4M | 4M | 800K | 200K | 8h 59m | 13,228 |
| 24 | 5.4M | 5.4M | 1M | 270K | 12h 34m | 14,950 |
| 25 | 7.3M | 7.3M | 1.4M | 360K | 17h 36m | 16,672 |
| 26 | 9.4M | 9.4M | 1.8M | 470K | 20h 15m | 19,202 |
| 27 | 13M | 13M | 2.6M | 670K | — | 21,732 |
| 28 | 17M | 17M | 3.5M | 890K | — | 24,262 |
| 29 | 22M | 22M | 4.4M | 1.1M | — | 26,792 |
| 30 | 27M | 27M | 5.4M | 1.3M | — | 30,470 |