Amalgamation of Holland, Gloddfa Ganol and Welsh Slate workings. Also linked underground to Cwm Orthin. Extensive underground workings. A lot of untopping work done. Was show mine.*
Publications (58)
- (1949); Caban 01 - May; 14 pages
- (1949); Caban 02 - October; 14 pages
- (1950); Caban 03 - January; 12 pages
- (1950); Caban 04 - May; 14 pages
- (1950); Caban 05 - October; 14 pages
- (1951); Caban 06 - February; 14 pages
- (1951); Caban 07 - June; 14 pages
- (1951); Caban 08 - October; 14 pages
- (1952); Caban 09 - February; 14 pages
- (1952); Caban 10 - July; 14 pages
- (1952); Caban 11 - October; 14 pages
- (1953); Caban 12 - April; 14 pages
- (1953); Caban 13 - August; 24 pages
- (1954); Caban 14 - January; 14 pages
- (1954); Caban 15 - May; 14 pages
- (1954); Caban 16 - November; 14 pages
- (1955); Caban 17 - May; 14 pages
- (1955); Caban 18 - October; 16 pages
- (1956); Caban 19 - March; 14 pages
- (1956); Caban 20 - September; 14 pages
- (1957); Caban 21 - January; 14 pages
- (1957); Caban 22 - July; 14 pages
- (1958); Caban 23 - January; 14 pages
- (1958); Caban 24 - July; 14 pages
- (1959); Caban 25 - January; 14 pages
- (1959); Caban 26 - October; 14 pages
- (1960); Caban 27 - December; 14 pages
- (1960); Caban 28 - March; 14 pages
- (1961); Caban 29 - December; 14 pages
- (1963); Caban 30 - February; 28 pages
- (1964); Caban 31 - March; 14 pages
- (1982); CATMHS - Newsletter 001; 27 pages
- (1994); CATMHS - Newsletter 040-October; 31 pages
- (1995); CATMHS - Newsletter 041-January; 33 pages
- (1997); CATMHS - Newsletter 051-October; 20 pages
- (1998); CATMHS - Newsletter 054-August; 30 pages
- (1999); CATMHS - Newsletter 056-February; 28 pages
- (2000); CATMHS - Newsletter 060-June; 20 pages
- (2003); CATMHS - Newsletter 071-May; 29 pages
- (2005); CATMHS - Newsletter 078-February; 34 pages
- (2005); CATMHS - Newsletter 079-May; 37 pages
- (2007); CATMHS - Newsletter 086-February; 43 pages
- (2018); CATMHS - Newsletter 131-May; 59 pages
- Isherwood, Graham (1985); Graham Isherwood Slate Collection - Oakeley Slate Figs 1-11; 21 pages
- Isherwood, Graham (1986); Graham Isherwood Slate Collection - Oakeley Slate Figs 12-27; 15 pages
- Isherwood, Graham (1986); Graham Isherwood Slate Collection - Oakeley Slate Figs 28-40; 16 pages
- Isherwood, Graham (1987); Graham Isherwood Slate Collection - Oakeley Slate Figs 106-122; 15 pages
- Isherwood, Graham (1987); Graham Isherwood Slate Collection - Oakeley Slate Figs 41-55; 15 pages
- Isherwood, Graham (1988); Graham Isherwood Slate Collection - Oakeley Slate Figs 123-134; 12 pages
- Isherwood, Graham (1988); Graham Isherwood Slate Collection - Oakeley Slate Figs 149-164; 15 pages
- Isherwood, Graham (1988); Graham Isherwood Slate Collection - Oakeley Slate Figs 170-176; 6 pages
- Isherwood, Graham (2006); Graham Isherwood Slate Collection - Down the Floors, Oakeley and Votty; 6 pages
- Isherwood, Graham (2007); Issue List; 5 pages
- Isherwood, Graham; Graham Isherwood Slate Collection - Oakley Cwmorthin Floor Heights; 1 pages
- Knowles, Jon (2007); Introduction; 2 pages
- le Neve Foster, C. (1896); Mines & Quarries Report-North Wales; 57 pages
- Promotion Pamphlets - Gloddfa Ganol - Guide; 8 pages
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
