Pwllbach Colliery. Investigation of the effect of a B.J.D. Aberton Disc Shearer, on the Yield of sized products (629/61/9) Jul 1961
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb6/d/dpro/ncb/6/853
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- ReferenceGB 216 D/D PRO/NCB/6/853
- Dates of CreationJul 1961
- Language of MaterialEnglish
- Physical Description1 file