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 |