Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/508 | Plans of workings at Ordnance Survey National Grid Reference NS 26/8858 Stone Colliery, Stane Surface Mine, Belmont Pit and Headlesscross Opencast Workings [written in pencil] noted on these plans. | c1979 |