Chain haulage and shearer at Wyndham Colliery
Men at the pit bottom of Wyndham Colliery
Gullick Dobson chocks at Nantgarw 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
Gullick Dobson chocks at Brynlliw Colliery
Coal transfer point at Brynlliw Colliery
Haulage engine at Brynlliw Colliery
Pit bottom at Abernant Colliery
Road at Abernant Colliery
Pumping station at Abernant Colliery