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    Nid oes gennych resi chwilio datblygedig. Ychwanegwch un trwy glicio ar y botwm '+ Ychwanegu Rhes'
    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    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
    Cofnod Casglu
    CWC - RCAHMW Collieries Publication Collection
    Cyfrwng
    Graphic.
    Cychwynnwr
    Stephen R. Hughes
    Dyddiad
    1994 to 1995