Pit bottom pumping station Taff Merthyr Colliery
Underground bunker at Taff Merthyr Colliery
Eimco machine at Taff Merthyr Colliery
Conveyor at Taff Merthyr Colliery
Underground track at Abercynon Colliery
Roadway at Abercynon Colliery
Underground bunker at Abercynon Colliery
Powered roof supports at Abercynon Colliery
Abercynon Colliery
Roof supports at Abercynon Colliery
Roadway at Betws Mine
Betws Mine
Underground track at Betws Mine
Powered supports at Betws Mine
Train at Betws Mine
Entrance to Blaengwrach Colliery
Locomotive at Blaengwrach Colliery
Pit pony at Big Pit Colliery
Dick Kear's Slope at Blaenavon
Coal face at Ammanford Colliery
Colliery Safety Officer at Ammanford Colliery
A face conveyor at Ammanford Colliery
Timber work at Ammanford Colliery