Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/910 | Plans of workings at Ordnance Survey National Grid Reference NT 36/4066 House of Muir Colliery, Tynemount Colliery, Oxenfoord No.3 Mine, Murrays, Little Murrays, Ormiston Mains and House of Muir named on these plans | [20th Century] |