Rubble underground at Fernhill Colliery
Train underground at Nantgarw Colliery
Gullick Dobson supports at Nantgarw Colliery
Chainless haulage at Nantgarw Colliery
Gullick Dobson chocks at Nantgarw Colliery
Underground roadway at Wyndham Colliery
Pit bottom at Wyndham Colliery
Chain haulage at Wyndham Colliery
Chain haulage and shearer at Wyndham Colliery
Men at the pit bottom of Wyndham Colliery
Haulage engine at Nantgarw Colliery
Drum shearer at Nantgarw Colliery
Manriding train at Nantgarw Colliery
Chain haulage at Nantgarw Colliery
Underground development at Nantgarw Colliery
Concrete lined roadway at Nantgarw Colliery
Pit bottom at Nantgarw Colliery
Development heading at Nantgarw Colliery
Drum shearer at work at Markham Colliery
Miner and drum shearer at work at Markham Colliery
View of Markham Colliery
Markham Colliery yard
Upcast and downcast shafts at Markham Colliery...
Six Feet Seam at Brynlliw Colliery
Underground at Brynlliw Colliery