The Hwch/Stanllyd Seams and the Big Vein currently being worked at Cwmgwili Colliery (1655/77/SW) Jun 1977
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb6/d/dpro/ncb/6/1754
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- ReferenceGB 216 D/D PRO/NCB/6/1754
- Dates of CreationJun 1977
- Language of MaterialEnglish
- Physical Description1 file