Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/851 | Plans of workings at Ordnance Survey National Grid Reference NT 36/3467 Cowdenfoot Mine, Cowden Colliery, Fordell Colliery, Fordell Mains Colliery, Wester Cowden, Thornybank House and Cowden Cleugh Cottage named on these plans. | 1958-1964 |