Cwmgwili Colliery H District, November, 1968. Difference in degradation between seven and nine chains on a Joy Continuous Miner (1298/68/WW) Dec 1968
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb6/d/dpro/ncb/6/1408
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- ReferenceGB 216 D/D PRO/NCB/6/1408
- Dates of CreationDec 1968
- Language of MaterialEnglish
- Physical Description1 file