Map showing sites of Gunpowder Works and Silica Mine near Pontneddfechan.
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dz897/d/dz897/9
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- ReferenceGB 216 D/D Z 897/9
- Dates of Creation1986
- Language of MaterialEnglish
- Physical Description1 paper