Blaenserchan Colliery before modernisation
General view of Blaenserchan Colliery
Landscape view of Blaenserchan Colliery
Pit bottom at Blaenserchan Colliery
View of Blaenserchan Colliery
Electrical panels at Blaenserchan Colliery
Underground junction at Blaenserchan Colliery
Haulage engine at Blaenserchan Colliery
Underground at Britannia Colliery
Dram on track at Britannia Colliery
Underground track at Britannia Colliery
Conveyor at Britannia Colliery
Haulage engines underground at Britannia Colliery
Drams underground at Britannia Colliery
An engine at Rose Heyworth Colliery
A high speed conveyor at Rose Heyworth Colliery
Gullick chocks on standby at Lewis Merthyr...
North 91 face of Lewis Merthyr Colliery
Props and bars at Lewis Merthyr Colliery
Bertie shaft at Lewis Merthyr Colliery
Underground roadway at Lewis Merthyr Colliery
Large Gullick chocks at Lewis Merthyr Colliery
Installing Gullick chocks at Lewis Merthyr...
Timbered longwall face at Lewis Merthyr Colliery
Installation of a new face at Lewis Merthyr...