| Collieries | Index | Collieries |
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Colliery/Mine Information Pages - Index
Pages updated since 01 Oct 2008 are highlighted thus: 
| Colliery | Location | Cnty | Opened | Closed | |
|---|---|---|---|---|---|
| Upper Level | Nenthead | CUL | |||
| Ulgham Colliery | Widdrington | NBL | 1924 | ||
| Ulgham Grange Colliery | Morpeth | NBL | 1888 | ||
| Ulgham Park Colliery | Morpeth | NBL | |||
| Ullbank (Iron Ore) | Egremont | CUL | 1919 | ||
| Ullcoats (Iron Ore) | Egremont | CUL | |||
| Underbank (Chert) | Lunedale | NRY | |||
| Union Brickworks Clay Pit | Birtley | DUR | |||
| Union Pit | Walbottle | NBL | |||
|
Union Pit | Seaham | DUR | 1845 | 1864 |
|
Union Pit | nr. Newburn | NBL | ||
| Unthank Colliery | Riding Mill | NBL | |||
|
Upcast Shaft | West Edmondsley | DUR | 30 Nov 1920 | |
|
Upcast Shaft | Annfield Plain | DUR | 05 Oct 1973 | |
|
Upleatham (Ironstone) | Upleatham, Saltburn | NRY | 1924 | |
| Upper Heworth Colliery | Heworth | DUR | |||
|
Upsal (Ironstone) | Middlesbrough | NRY | ||
| Urpeth Busty Colliery | Pelton | DUR | |||
|
Urpeth Colliery | Urpeth | DUR | 1835 | 30 Mar 1957 |
| Urswick (Iron Ore) | Urswick | LAN | |||
|
Ushaw Moor Colliery | Ushaw Moor | DUR | 1865 | 05 Aug 1960 |
|
Usworth Colliery | Usworth | DUR | 1845 | 01 Aug 1974 |
| Usworth Opencast | DUR |
