Prime Geological Data resulting from deep underground coal exploration and exploitation produced by the British Coal Board and/or its precursors. The collection dates back to the 18th century and covers all the British coal mining areas and includes borehole site plans, borehole logs, analyses and geophysical data etc. Apart from primary data relating to past and current collieries and for future prospects the information includes reports, interpretations and records of research. The majority of the collection was deposited with the National Geological Records Centre by the Coal Authority in July 2001.

Data resulting from deep underground coal exploration and exploitation. Collection of data, dating back to the 18th century, includes reports, interpretations and records of research in all British coalfield areas deposited by the British Coal Corporation. Data for past and current collieries and for future prospects. The majority of the collection was deposited with the National Geological Records Centre in July 2001. The collection includes borehole site plans, borehole logs , analyses and geophysical data etc. Records were selected for retention by British Coal Surveyors and BGS.