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| | Durham Mining Museum - Tanfield Lea Colliery |
 | | Their Tanfield Lea colliery is worked by two shafts, 65 and 31 fathoms respectively, and the seams are the Hutton, 10 feet ; the Main coal, 3 feet 6 inches ; the Brass Thill, 5 feet ; and the Five Quarter, 4 feet to 4 feet 6 inches. |
 | | Tanfield Moor colliery, with one shaft, 60 fathoms, is working the Brass Thill, 5 feet, and the Five Quarter, from 4 to 4 feet 6 inches. |
 | | At the East Tanfield colliery two shafts are employed, the Busty and the Brockwell, 64 and 78 fathoms deep respectively. |
| www.dmm.org.uk /colliery/t001.htm (2418 words) |
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