After an introductory history of the NCB over those years, the book lists every colliery, drift mine, NCB railway, coking ovens and coking plant, brickworks, workshops and opencast disposal point in Durham, including non-loco lines and much detail of rail working underground. There are 416 pages, 18 colour maps, 28 diagrams and 271 photographs, including sections specifically covering NCB wagons, wagon tickets and underground man-riding vehicles.