Narrow your results by:
- All
- Mines and mineral resources -- Wales -- Caernarvonshire., 1 results
- Mines and mineral resources -- Wales -- Merioneth., 1 results
- Quarries and quarrying -- Wales -- Caernarvonshire., 1 results
- Quarries and quarrying -- Wales -- Merioneth., 1 results
- Bwlch-y-plwm (Llanfrothen, Wales : Mine), 1 results