The seam here is in the strata immediately above the Doubler Stones Sandstone below a Lingula band, which is believed to correlate with the Butterly Marine Band. The seam’s outcrop runs east for 1.2 km from a south-west to north-east fault, just west of Carr Clough Beck, past High Cote Cottages, to Leodes swing bridge on the canal in Riddlesden. Here it is faulted down to the south, but it has been worked from shafts for a further 2 km to near Morton Cemetery. Some of the workings were associated with canal-side limekilns, which burnt limestone brought by barge from a quarry at Skipton Rock. The thickness is said to vary between 60 inches (1.5m) at West Riddlesden Hall and 36 inches (0.9m) at High Cote and the seam dips gently eastwards. John Brigg reported that the coal was up to six feet (1.8m) thick and that when mining ceased c1856 it was of such poor quality that “the cinder and ash that remains after combustion are almost if not quite equal to the unburnt coal in bulk”.
Gill, M.C. “Great Dales Coalfield, Eastern Areas” British Mining No.86 (2008), pp.68-108
Gill, M.C. Keighley Coal (British Mining No.74, 2004)