| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Parys Mountain Mines, Amlwch, Isle of Anglesey, Wales, UK | 53° 23' 12" N | 4° 20' 39" W | 1.8km (1.1 miles) | |
| Rhos Mynach Mine (Rhos-mynach Mine), Llaneilian, Isle of Anglesey, Wales, UK | 53° 23' 21" N | 4° 16' 53" W | 2.4km (1.5 miles) | |
| Pant-y-Gaseg Mine, Amlwch, Isle of Anglesey, Wales, UK | 53° 25' 23" N | 4° 23' 24" W | 6.1km (3.8 miles) | |
| SS Liverpool wreck site, Isle of Anglesey, Wales, UK | 53° 25' 53" N | 4° 25' 24" W | 8.4km (5.2 miles) | |
| Church Bay, Cylch-y-Garn, Isle of Anglesey, Wales, UK | 53° 22' 18" N | 4° 33' 24" W | 16.0km (10.0 miles) | |
| Nant a Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 14' 28" N | 4° 16' 44" W | 16.7km (10.4 miles) | |
| Berw Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 13' 37" N | 4° 18' 12" W | 18.1km (11.3 miles) | |
| Morfa-mawr Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 13' 9" N | 4° 19' 5" W | 18.9km (11.8 miles) | |
| Tai Hirion Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 12' 51" N | 4° 19' 26" W | 19.5km (12.1 miles) | |
| Pen-Crug Colliery, Llangristiolus, Isle of Anglesey, Wales, UK | 53° 12' 38" N | 4° 21' 31" W | 20.1km (12.5 miles) | |
| Marquis Colliery, Bodorgan, Isle of Anglesey, Wales, UK | 53° 12' 13" N | 4° 21' 42" W | 20.9km (13.0 miles) | |
| Tyn-y-Flat Colliery, Bodorgan, Isle of Anglesey, Wales, UK | 53° 12' 11" N | 4° 21' 59" W | 21.0km (13.1 miles) | |
| Pont Marquis Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 12' 5" N | 4° 20' 46" W | 21.0km (13.1 miles) | |
| Glantraeth Colliery, Bodorgan, Isle of Anglesey, Wales, UK | 53° 11' 49" N | 4° 22' 36" W | 21.8km (13.5 miles) | |
| Nant Ffrancon Formation, Llandygai, Gwynedd, Wales, UK | 53° 13' 45" N | 4° 5' 2" W | 23.6km (14.7 miles) | |
| Rhoscolyn, Rhoscolyn, Isle of Anglesey, Wales, UK | 53° 15' 28" N | 4° 35' 48" W | 23.7km (14.7 miles) | |
| Penrhyn Mine, Llandegai, Gwynedd, Wales, UK | 53° 12' 26" N | 4° 6' 14" W | 24.7km (15.4 miles) | |
| Llanllechid, Llanllechid, Gwynedd, Wales, UK | 53° 11' 49" N | 4° 3' 46" W | 27.3km (17.0 miles) | |
| Bryn-havod-y-wern Slate Quarry, Llanllechid, Gwynedd, Wales, UK | 53° 12' 8" N | 4° 3' 7" W | 27.3km (17.0 miles) | |
| Tan-y-bwlch Slate Quarry, Llanllechid, Gwynedd, Wales, UK | 53° 11' 41" N | 4° 3' 17" W | 27.8km (17.3 miles) | |
| Tan-y-bwlch Slate Quarry, Bethesda, Gwynedd, Wales, UK | 53° 11' 33" N | 4° 3' 25" W | 27.9km (17.3 miles) | |
| Moel Faban Slate Quarries, Bethesda, Gwynedd, Wales, UK | 53° 11' 17" N | 4° 3' 24" W | 28.3km (17.6 miles) | |
| Unnamed Quarry west of Gyrn, Llanllechid, Gwynedd, Wales, UK | 53° 11' 57" N | 4° 1' 52" W | 28.4km (17.7 miles) | |
| Llanddwyn Bay, Rhosyr, Isle of Anglesey, Wales, UK | 53° 8' 22" N | 4° 24' 31" W | 28.5km (17.7 miles) | |
| Unnamed workings north of Gyrn, Llanllechid, Gwynedd, Wales, UK | 53° 12' 3" N | 4° 1' 36" W | 28.5km (17.7 miles) | |
| Unnamed Quarry SW of Gyrn, Llanllechid, Gwynedd, Wales, UK | 53° 11' 52" N | 4° 1' 47" W | 28.6km (17.8 miles) | |
| Gyrn Stone Quarry, Llanllechid, Gwynedd, Wales, UK | 53° 11' 52" N | 4° 1' 34" W | 28.8km (17.9 miles) | |
| Cwm Ffrydias Quarry, Llanllechid, Gwynedd, Wales, UK | 53° 11' 30" N | 4° 1' 33" W | 29.3km (18.2 miles) | |
| Cwm Ffrydias Trial Mine, Llanllechid, Gwynedd, Wales, UK | 53° 11' 33" N | 4° 1' 22" W | 29.4km (18.3 miles) | |
| Craiglwyd Quarry, Penmaenmawr, Conwy, Wales, UK | 53° 15' 33" N | 3° 55' 41" W | 29.6km (18.4 miles) | |
Parys Mountain Mines, Amlwch, Isle of Anglesey, Wales, UK