Cofnod Archif

Rhif Archif

6418909

Disgrifiad

Measured drawing (permatrace) of transmission lines and the distribution of power to pits. As published on p. 16 of Collieries in Wales: Engineering and Architecture by S. Hughes et al

Enw Casgliad

CWC - RCAHMW Collieries Publication Collection

Cyfrwng

Graphic.

Cychwynnwr

Stephen R. Hughes

Dyddiad

1994 to 1995