Graig Merthyr Colliery. Run-of-Mine Test (146/56/1) Oct 1956
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb6/d/dpro/ncb/6/313
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- ReferenceGB 216 D/D PRO/NCB/6/313
- Dates of CreationOct 1956
- Language of MaterialEnglish
- Physical Description1 file