Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/789 | Plans of workings at Ordnance Survey National Grid Reference NT 36//2866 Bilston Glen Colliery, Gilmerton Colliery, Edgefield, Wester Melville, Backdale, Wadingburn, Loanhead, Edgefield Cottage and Haveral Wood named on these plans. | 1966-1972 |