Performance of Tirbach and a mixture of Pentremawr and Tirbach coals washed at Coedbach Washery (489/60/A) Apr 1960
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb6/d/dpro/ncb/6/680
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- ReferenceGB 216 D/D PRO/NCB/6/680
- Dates of CreationApr 1960
- Language of MaterialEnglish
- Physical Description1 file