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1 colour print showing one of the six main inlet valves at Dinorwig Power Station; collated by the former Central Office of Information.Further Information
  • 6044841COI - Central Office of Information Photographic Collection - Collection
  • 6210974COI_08 - Central Office of Information Photographic Collection - Group
  • 6210999COI_08_18 - Central Office of Information Photographic Collection - Item