Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/279 | Plans of workings at Ordnance Survey National Grid Reference NS 26/6875 Twechar Colliery, Gartshore No.10 Pit, St Flannans Colliery, Shirva and Wester Shirva noted on these plans. | 1959-1960 |