Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/555 | Plans of workings at Ordnance Survey National Grid Reference NS 26/9077 Redding No.23 Pits, Reddingmuirhead, Gutterhole Shaft, Wallacestone, Polmonside Square, Middlerig, Wester Newlands, Easter Pirleyhill and Herdshill Pit noted on these plans. | 1955-1959 |