| Answer | Crossword Clue |
|---|---|
| SUMPPUMP | Part of a mine drainage system. |
| WASTEPIPE | Part of a drainage system. |
| AIRTRAP | Part of a drainage system. |
| SCUPPERS | Drainage system of a ship. |
| STOPE | Part of a mine. |
| SHAFT | Part of a mine |
| SUMP | Lowest part of a mine |
| SEAM | Part of a dress or mine |
