| source(noun, pit, excavation, coalfield, coalmine) |
| spring(noun, pit, excavation, coalfield, coalmine) |
| stock(noun, pit, excavation, coalfield, coalmine) |
| store(noun, pit, excavation, coalfield, coalmine) |
| supply(noun, pit, excavation, coalfield, coalmine) |
| treasure trove(noun, expression, pit, excavation, coalfield) |
| treasury(noun, pit, excavation, coalfield, coalmine) |
| trench(noun, pit, excavation, coalfield, coalmine) |
| vein(noun, pit, excavation, coalfield, coalmine) |
| wealth(noun, pit, excavation, coalfield, coalmine) |
| well(noun, pit, excavation, coalfield, coalmine) |
| wellspring(noun, pit, excavation, coalfield, coalmine) |
| abundance(noun, pit, excavation, coalfield, coalmine) |
| bed(noun, pit, excavation, coalfield, coalmine) |
| bonanza(noun, pit, excavation, coalfield, coalmine) |
| coal face(expression, idiom) |