Rhan oMonmouthshire and South Wales Coal Owners Association Records,
Letters and papers relating to disputes at Ferndale; Ffaldau Colliery, Pontycymmer; Cwmaman; Pontypool; Merthyr Vale; East Elliot Pit, New Tredegar; Morfa Colliery, Taibach.
Survey reports for Ffaldau Colliery, Pontycymmer area,
Rhan oMonmouthshire and South Wales Coal Owners Association Records,
Samples 45. Examination of the Upper Nine Feet and Lower Nine Feet seams; Fusion Point of Coal Ash reports for both.
Rhan oMonmouthshire and South Wales Coal Owners Association Records,
Letters and papers relating to disputes at Ffaldau, Great Anthracite Collieries, Llanelly; at Tynewydd; Ty Trist and Pochin Collieries, Tredegar; and the Ferndale, Tylorstown, Ebbw Vale, and Cwmbran collieries, among others.