Total Output 12,000 tonnes. Hafotty was largest manganese mine in Meirioneth. Hafotty adjacent to Egryn. Egryn re-opened during WW1. Manganese mined using adits and shafts.
External Links
Publications (1)
- Down, C.G.; NMRS (1980); British Mining 14; Manganeses Mines of North Wales, The