Publications (4)
- (1922); BGS - Mineral Resources of GB (c1920s) Vol XX - Lead and Zinc: Cardiganshire & West Montogmeryshire; 242 pages
- Bick, D.E. (1991); Old Metal Mines of Mid-Wales, The; South of Goginan - Part 2; pp. 22-26
- Hughes, Simon J.S. (2004); Brief History of the Ystumtuen Mines, A; 18 pages
- Liscombe & Co (1880); Mines of Cardiganshire, Montgomereyshire & Shropshire; 52 pages
Cwm Rheidol - 640m
Cwm Rheidiol - 643m
Cae Cynon - 664m
Ystumtuen - 844m
Alltddu - 1,031m
South Bwa Drain - 1,082m
Gwaith Goch - 1,237m
Rhiw Rugos - 1,237m
Penrhiw - 1,248m
Rheidiol United (Mine Group) - 1,425m
Nantglas - 1,453m
Bwlch Gwyn - 1,528m
Bwa Drain - 1,729m
Llwyn Teifi - 1,767m
Pantmawr - 1,800m