Shallow opencuts.
External Links
Publications (2)
- (1923); BGS - Mineral Resources of GB (c1920s) Vol I - Tungsten & Manganes Ores; 93 pages
- Down, C.G.; NMRS (1980); British Mining 14; Manganeses Mines of North Wales, The, ISBN: 0901450170
Cefn y Clawdd
Manganese Mine
Worked from 1920 to 1921
Jan 1st, 2024 from Cambrian by Buddle-Bot
| North Wales | |
| Trawsfynydd | |
| 52.89223, -3.98583 | |
| SH 6650 3460 | |
| Open Access | |
| 480m | |
| #903 |
Llyn Du Bach - 941m- Llyn Dywarchen - 1,097m
Ffridd Llwyd - 1,906m