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    Archive Number
    6537109
    Description
    Black and white aerial photograph of Maen Offeren Slate Mine, taken by the Ordnance Survey on 17th April 1973 at an altitude of 7,500 feet. Grid reference SH7046. Print enlargement (c. 20") taken from 9" film roll.
    Collection Record
    Ordnance Survey Vertical Aerial Photography Collection
    Medium
    Photo.
    Originator
    Ordnance Survey
    Date
    1973-04-17