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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6418910
    Disgrifiad
    Measured drawing of transmission lines and the distribution of power to pits. Enlargement of CWC/01/01/04. 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