Pit with number of large bore drilled tunnels.***
External Links
Publications (5)
- (1987); WMS Newsletter Issue 16 Jun; 3 pages
- (1990); WMS Newsletter Issue 22 Jun; 8 pages
- (2003); WMS Newsletter Issue 48 Apr; 32 pages
- Edited by D. J. Linton (2015); Welsh Mines & Mining - Mining Technology - Technical Innovation in the Extractive Industries; 181 pages
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968















