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    Archive Number
    6418966
    Description
    Schematic drawing of the power house, housing the flywheels, at Penallta Colliery as published on p. 28 of Collieries of Wales: Engineering & Architecture by S. Hughes et al
    Collection Name
    CWC - RCAHMW Collieries Publication Collection
    Medium
    Graphic.
    Originator
    Stephen R. Hughes, RCAHMW
    Date
    1994 to 1995