Seam Analysis. Cwmdu Colliery. Four Feet and Upper Six Feet Seams, Big Vein (1634/76/SW) Mar 1976
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb6/d/dpro/ncb/6/1771
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- ReferenceGB 216 D/D PRO/NCB/6/1771
- Dates of CreationMar 1976
- Language of MaterialEnglish
- Physical Description1 file