| Reference | Title | Date |
| RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
| RHP146000/578 | Plans of workings at Ordnance Survey National Grid Reference NS 26/9267
Cowdenhead Pit, Harthill No.3 Pit, Bathville No.3 Pit, Armadale No.17 Pit, Polkemmet Pits No.3, No.5, No.6, No.7 and No.9, Hopetoun Pits No.2 and No.11 and Polkemmet Colliery noted on these plans. | 1958-1980 |