Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/114 | Plans of workings at Ordnance Survey National Grid Reference NS 26/4622 Killoch Colliery, Little Spierston, Plotcock, Lawhill, Henryston and Gargowan noted on these plans. | 1971-1980 |