| Title | Sutton cum Duckmanton, Heath: Photostat copy of a 1939 plan of Springwood Colliery, Sutton-cum-Duckmanton and Heath, Top Hard Seam, showing underground and surface levels, the layout of the workings, dates of extraction of coal (1929-1938), the position of air shafts and a section of the seam. Scale:1 chain to 1 inch. 39" x 28½". |