List of coal mines UK 1880.
293 Pump House, West Bromwich, J Bagnall and Sons. 294 Parkhead, Dudley, S Garratt and Sons. 130 Gravel Hole, Great Lever, Earl of Bradford. 131 Great Boys, Tyldesley , Thomas Fletcher and Sons. Slant, Swansea, Cwmfelin Tin Plate Co. 136 Graig Merthyr, Swansea Vale, Cory Yeo and Co. 137 Graig Level, Pontypridd, London and South Wales