| Answer | Crossword Clue |
|---|---|
| ESSEN | Former German coal center |
| APPALACHIA | Coal-mining center |
| SAAR | European coal center. |
| RUHR | European coal center |
| ESSEN | European coal center |
| ALBIA | Iowa coal center |
| NEWCASTLE | English coal center |
| OSTRAVA | Czech coal center |
| SAAR | Coal center in Europe. |
| MONS | Belgian city, coal-mining center. |
| SAARBASIN | European coal and iron center. |
| MONS | City in Belgium coal-mining center. |
