Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/852 | Plans of workings at Ordnance Survey National Grid Reference NT 36/3468 Smeaton Colliery, Dalkeith Colliery, Cowdenfoot Mine, Langside, Langside Head, Newfarm, Smeaton Head and Sandyriggs Wood named on these plans. | 1958-1971 |