| bonanza(noun, coalfield, coalmine) |
| coalface(noun, shaft, seam, coalfield) |
| coalmine(noun, shaft, seam, coalfield) |
| deposit(noun, supply, reserve, coalfield) |
| field(noun, supply, reserve, deposit) |
| fount(noun, supply, reserve, deposit) |
| fountain(noun, supply, reserve, deposit) |
| fund(noun, supply, reserve, deposit) |
| gold mine(noun, expression, coalfield, coalmine) |
| hoard(noun, supply, reserve, deposit) |
| pithead(noun, coalfield, coalmine) |
| reserve(noun, supply, deposit, coalfield) |
| source(noun, supply, reserve, deposit) |
| spring(noun, supply, reserve, deposit) |
| stock(noun, supply, reserve, deposit) |
| store(noun, supply, reserve, deposit) |
| supply(noun, reserve, deposit, coalfield) |
| treasury(noun, supply, reserve, deposit) |
| wealth(noun, supply, reserve, deposit) |
| wellspring(noun, supply, reserve, deposit) |