Trefor shaft at Lewis Merthyr Colliery
Trefor Winding engine at Lewis Merthyr Colliery
View of Great Western Colliery
Winding engine at Great Western Colliery
Wooden frame for holding horses at Great...
Barker & Cope winding engine at Great...
Remains of ventilation furnace at Great Western...
A pump at Great Western Colliery
Great Western Colliery
Hetty Pi at Great Western Colliery
Steam pump underground at Great Western Colliery
Steam pump at Great Western Colliery
Flooded roadway at Great Western Colliery
Cameron steam pump at Great Western Colliery
Steam pump with banjo frames at Great Western...
Wyndham Western Colliery
Winding engine at Wyndham Western Colliery
Timber dram at Wyndham Western Colliery
Surface buildings at Crumlin Navigation Colliery
Haulage engine at Marine Colliery
Pumping engine Marine Colliery
Marine Colliery yard
Downcast shaft at Marine Colliery
Surface view of Marine Colliery
Shaft haulage engine at Marine Colliery
Cast iron structure at Marine Colliery