Durham County Record Office
Has a database of Durham collieries and of Durham Miners Association archives. There is a user guide: Colliery Personnel Records
National Archives
There is a research guide: Mines and mining
Coal and coal mining in the National Archives is a wiki (collaborative website) introducing the main classes of public records from about 1800
National Records of Scotland
Has a user guide: Coal mining records
North East England Mining Archive and Research Centre (NEEMARC)
The collection at Sunderland University Library contains records from NEIMME, The National Union of Mineworkers Durham Area (NUM), and the Durham branch of the National Association of Colliery Overmen, Deputies and Shotfirers (NACODS)
Northumberland Archives
The collection includes mining objects as well as manuscripts, photographs, etc.
There is a user guide: Coal Mining Records for Family Historians
Tyne and Wear Archives
User guides:
Coal Industry – Part 1
Coal Industry – Part 2: Individual Collieries