Maesgwyn Opencast Coal Site. Exploratory Core Drilling, Analyses of Coal Seams. White Four Feet Seam, Eighteen Feet Seam, Cornish Four Feet Seam, Nine Feet Seam (554/60/9 O.C) Oct 1960
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb6/d/dpro/ncb/6/721
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- ReferenceGB 216 D/D PRO/NCB/6/721
- Dates of CreationOct 1960
- Language of MaterialEnglish
- Physical Description1 file