Deep tunnel draining Westminster and Pant-y-Gwlanod veins.
External Links
Publications (3)
- Bird, R.H., (1977); Yesterday's Golcondas: notable British metal mines; p.60; Moorland Publishing; 0903485370
- Ebbs, Cris (2009); Lead Mining at Eryrys & Llanarmon; 17 pages
- Smith, Bernard (1921); BGS - Mineral Resources of GB (c1920s) Vol XIX - Lead and Zinc: in Carboniferous of North Wales; 169 pages






