Disgrifiad
Transparent drawing of Taff Merthyr Colliery with indentification of principle surface features. Partial draft of CWC/01/01/14, which is published on p. 11 of Collieries of Wales: Engineering and Architecture by S. Hughes et al
Cofnod Casglu
CWC - RCAHMW Collieries Publication Collection
Cychwynnwr
Stephen R. Hughes, RCAHMW
