Publications (1)
- (1921); BGS - Mineral Resources of GB (c1920s) Vol XIX - Lead and Zinc: in Carboniferous of North Wales; 169 pages
Ty'n Twll - 345m
Pant y Garreg - 729m
Merllyn, Whim Shaft - 887m
Bryn Forwd - 890m
Merllyn - 952m
Lloc New Engine Shaft - 1,042m
Lloc - 1,050m
Ty Maen - 1,066m
Celyn Bog - 1,200m
Pantywacco - 1,227m
Tymaen - 1,261m
Coed Penygelli - 1,273m
Waen & Merllyn - 1,273m
Garreg - 1,288m
Garreg Mine Engine Shaft - 1,289m
Penygelli - 1,309m
Rhydwen - 1,408m
Plantation - 1,520m
Bryn y Gaseg - 1,609m
Whitford - 1,739m
Pen y Gelli Quarry - 1,852m
Ffordd Las - 1,969m