Original National Coal Board negative number: ONLL/3/2/8. Original Glamorgan Archives box number: DNCB/79/24.
Photograph of a Plan Showing Workings in the 4 Feet Cornish Seam, Onllwyn No.3
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb214-dncb/dncb/14/4/99/18
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- ReferenceGB 214 DNCB/14/4/99/18
- Dates of Creation[1951]
- Physical Description1 Plastic Negative