| gold mine(noun, expression, pit, excavation, coalfield) |
| hoard(noun, pit, excavation, coalfield) |
| lode(noun, pit, excavation, coalfield) |
| mine(noun, shaft, pit, seam, excavation) |
| pitfall |
| pithead(noun, pit, excavation, coalfield) |
| reserve(noun, pit, excavation, coalfield) |
| seam(noun, shaft) |
| shaft(noun, mine, pit, seam, excavation) |
| source(noun, pit, excavation, coalfield) |
| spring(noun, pit, excavation, coalfield) |
| stock(noun, pit, excavation, coalfield) |
| stone |
| store(noun, pit, excavation, coalfield) |
| supply(noun, pit, excavation, coalfield) |
| treasure trove(noun, expression, pit, excavation, coalfield) |
| treasury(noun, pit, excavation, coalfield) |
| trench(noun, pit, excavation, coalfield) |
| vein(noun, pit, excavation, coalfield) |
| wealth(noun, pit, excavation, coalfield) |