Detail and cross section of pit entrance. Scale 2 ft: 1 in. Sep 1951
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- Bookmark:https://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb2/d/dpro/ncb/2/435
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- ReferenceGB 216 D/D PRO/NCB/2/435
- Dates of CreationSep 1951
- Language of MaterialEnglish
- Physical Description1 plan