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    Archive Number
    6515016
    Description
    Black and white aerial photograph of Cwm Rheidol Hydro Scheme, taken by the Ordnance Survey on 5th October 1972 at an altitude of 7,500 feet. Grid reference SN6979. Print enlargement (c. 20") taken from 9" film roll.
    Collection Name
    Ordnance Survey Vertical Aerial Photography Collection
    Medium
    Photo.
    Originator
    Ordnance Survey
    Date
    1972-10-05