• Cymraeg
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    Archive Number
    6022297
    Description
    Set of various annotated OS and air photo map extracts, showing the development of Cwm Machno Slate Quarry, Penmachno, from1891 to 1946.
    Collection Record
    NMR Site Files
    Medium
    Cartographic.
    Originator
    David J. Percival
    Date
    2003-07