Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/831 | Plans of workings at Ordnance Survey National Grid Reference NT 36/3268 Dalkeith Colliery, Woolmet Colliery, Sheriffhall Mains and Laundry Bridge named on these plans. | [20th Century] |