Pits, adits and come chambering.****
Publications (6)
- (1994); CATMHS - Newsletter 039-July; 37 pages
- (2001); CATMHS - Newsletter 065-October; 30 pages
- (2002); CATMHS - Newsletter 067-April; 32 pages
- (2014); CATMHS - Newsletter 117-November; 32 pages
- NMRS; Newsletter Nov/1984; pp.6
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
 
         
    



