| Clue | Source | Date |
|---|---|---|
| Gangue | ||
| Ore-crusher waste (8) | ||
| Gold dredge refuse (8) | ||
| Waste from orecrushing plant (8) | ||
| Leftover waste from an orecrushing plant (8) | ||
| Residue of ore | Irish Times Simplex | 11 Dec 2018 |
| Mining residue | ||
| Residue, in mining | ||
| Refuse from ground ore | ||
| Mining waste |