| colliery(noun, shaft, mine, seam) |
| quarry(noun, shaft, seam, excavation) |
| abundance(noun, excavation, coalfield) |
| bed(noun, excavation, coalfield) |
| bonanza(noun, excavation, coalfield) |
| coalface(noun, shaft, mine, seam) |
| coalfield(noun, seam, excavation) |
| deposit(noun, excavation, coalfield) |
| ditch(noun, excavation, coalfield) |
| excavation(noun, shaft, seam, coalfield) |
| field(noun, excavation, coalfield) |
| fount(noun, excavation, coalfield) |
| fountain(noun, excavation, coalfield) |
| fund(noun, excavation, coalfield) |
| gold mine(noun, expression, excavation, coalfield) |
| hoard(noun, excavation, coalfield) |
| lode(noun, excavation, coalfield) |
| mine(noun, shaft, seam, excavation) |
| pithead(noun, excavation, coalfield) |
| reserve(noun, excavation, coalfield) |