ANALYSIS BOOK of make of slates and slabs, Cwm Machno Slate Quarry, Penmachno.

This material is held atGwynedd Archives Service - Caernarfon Record Office / Gwasanaeth Archifau Gwynedd, Archifdy Caernarfon

  • Reference
    • GB 219 XM12083/1
  • Dates of Creation
    • 1921-1929

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