Denaby Crossing SBD, , 581 k B, courtesy Industrialogical Associates Collection. Dodworth: several diagrams are available for Dodworth. Finally, single line to Courthouse Junction SBD 176 kb, courtesy Industrialogical Associates Collection.
The edges of the holes in my diagram show evidence of having being 'chewed' - suggesting it was affixed over the original diagram shown in Johnson's book. No date, but probably the diagram prepared for the signalling alterations made about 1950, in connection with electrification.
Here is the Dunford West block shelf layout diagram (831 kb, courtesy of Simon Foster). Shown in two sections: Elsecar Junction left (718 kb) and Elsecar Junction right (782 kb).
Subsequently, more track circuits were added and the line to the west reduced from four track to two track.
The final layout controlled from the power frame is shown on this layout plan (311 k B).
Elsham SBD, 1/2/1967, 434 k B, courtesy Industrialogical Associates Collection.