Publications (2)
- (1921); BGS - Mineral Resources of GB (c1920s) Vol XIX - Lead and Zinc: in Carboniferous of North Wales; 169 pages
- Foster-Smith, James R.; NMRS (1974); Occasional Publication 7 - Non-Ferrous Mines of Flintshire, The; pp.45
Hwylfa Shaft
aka Dolphin
Lead Mine
Jan 1st, 2024 from Cambrian by Buddle-Bot
| North Wales | |
| Halkyn | |
| 53.253311, -3.206616 | |
| SJ 1960 7360 | |
| Private Land | |
| 205m | |
| #480 |
North Henblas Shaft - 355m- Herward - 415m
Pen yr Hwylfa - 596m- Caeau - 621m
- Pen y Pylle - 801m
Bryn Mawr Quarry - 875m- Cross Leavings - 918m
Pen yr Henblas - 919m- Milwr - 978m
- Pwllclai - 1,012m
- Pwllwheal - 1,096m
- Parry's Vein - 1,209m
- Brynford Hall - 1,359m
- Pant y Pwll Dwr - 1,427m
- Pant y Pydew - 1,431m
- Pant y Pydew Engine Shaft - 1,451m
- Prince Patrick - 1,476m
- Pwll y Gaseg - 1,551m
- Brynyrhenblas - 1,566m
- Billins - 1,582m
- Silver Rake - 1,590m
- Thorntree - 1,605m
- Cornell Llwyd - 1,655m
- Maenbras - 1,661m
- Maeslygan - 1,667m
- Halkyn Marble Quarry - 1,775m
- Prince Patrick North - 1,837m
- Pen y Bryn - 1,853m
- Nant y Fuwch - 1,888m
- Llwyn y Cosyn - 1,904m
- Gelli Folwer - 1,967m