Pwllbach Colliery. Investigation of the effect of a B.J.D. Anderton 40 Disc Shearer and Pulsed Blasting on the yield of sized products (755/63/9) Jan 1963
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb6/d/dpro/ncb/6/932
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- ReferenceGB 216 D/D PRO/NCB/6/932
- Dates of CreationJan 1963
- Language of MaterialEnglish
- Physical Description1 file