MineArchiveDuchy of Cornwall
The private estate of the Duke of Cornwall, which owns both of the quarries still working on Ham Hill. Recorded here as landowner rather than as the operating quarry firm.
Mines operated
| Mine | Region | Years |
|---|---|---|
| East Holmbush Mine | Cornwall | 1850–? |
| Ham Hill Quarries | Somerset | ?–? |
| Prince of Wales Quarry, Trebarwith | Cornwall | ?–? |
| Restormel Royal Iron Mine | Cornwall | ?–? |
Record created: 3 September 2026 · Last researched: 3 September 2026