Open quarry with three levels following dip underground to 130’ intercepting bottom adit. Dumping of spoil from A55 Bangor Bypass has obliterated the site.
External Links
Publications (4)
- (1920); BGS - Mineral Resources of GB (c1920s) Vol XIII - Iron Ores: Pre Carboniferous bedded ores of England and Wales; 144 pages
- BGS - Mine Plans (large, zoomable) - Penrhyn Iron Ore Mine Nr Bangor; 1 pages
- Robert J.B. Trythall (1988); Mid-Ordovician Oolitic Ironstones of North Wales; 266 pages
- Wilkinson Jeremy S. (2005); British Mining No. 78, Memoirs 2005, NMRS
