Cat Shaft worked a 14 inch (0.36m) thick seam, which did not outcrop, in the sandstone immediately below the Underset Limestone i.e. in the Three Yard Cyclothem. The coal, which was claimed to be of excellent quality, was used in the boiler of this lead mine’s pumping engine.
A short outcrop of coal in the Ten Fathom Grit, which crosses Roan Beck near Hurst, appears to have been tried by a shaft (404490.502965), but was not otherwise worked.
An outcrop of the Grassington Grit coal meanders northwards from Racca Vein for four kilometres until it reaches the eastern extension of the Great Blackside Vein. It has been worked from a cluster of at least 16 shafts.Return to previous page