1855-1865 J. Pease & Co. 1870 S. Smithson & Co. 1875-1890 South Durham Coal Co. 1905-1930 Pease
Publications (4)
- (1920); BGS - Mineral Resources of GB (c1920s) Vol VII - Lignites, Jet, Kimmeridge oil, England and Wales; 132 pages
- Hill, Alan; NMRS (2012); British Mining 94 - Coal: A Chronology for Britain; ISBN 0901450 6 85; pp.166-167.
- NMRS; British Mining 28 - Memoirs 1985; pp.39.
- NMRS; British Mining 55 - Memoirs 1995; pp.13,16,19,29.
Eldon (b) - 80m- Black Boy, Gurney Pit - 408m
- South Durham Old - 719m
- Eldon, John Henry Pit - 823m
- Middridge Drift (b) - 1,202m
- Middridge Drift (a) - 1,307m
- Auckland Park - 1,308m
- Auckland Park, South Pit - 1,319m
- Blackburn, North Pit - 1,353m
- Eldon Drift - 1,362m
- Black Boy - 1,473m
- Old Black Boy - 1,668m
- Adelaide - 1,763m
- Tunnel Drift - 1,766m
- Deanery (a) - 1,773m
- Adelaide, Jane Pit - 1,795m
- Bishop's Park - 1,932m
- South Church Drift - 1,933m
- Jawblades - 1,944m
- Newblades - 1,950m
- Middridge - 1,987m
