Lady Windsor Colliery, steam locomotive with the upcast shaft in the background, 1977 Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Lewis Merthyr Colliery, 1977, hydraulic roof supports in the yard waiting to be taken underground. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Maerdy Colliery, 1977, empty mine cars waiting at pit top. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Nantgarw Colliery, 1978, Anderson Strathclyde drum shearer cutting coal on the coal face. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Taff Merthyr Colliery, heading with Dosco road heading machine and auxiliary ventilation, 1979. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Ty Mawr Colliery, the remains of an underground ventilation furnace which date back to the late 1870s. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Aberpergwm Colliery, Dosco Road heading machine and auxiliary fan ducting, c.1978 Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Abernant Colliery, miner at a pumping station at pit bottom, 1978 Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Cefn Coed Colliery engine house for the Markham engine on the upcast shaft 1973. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Cefn Coed Colliery, 1973, engine house and downcast shaft headframe. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Graig Merthyr Colliery yard in 1977 with a long journey of drams waiting to be run into the mine. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Graig Merthyr Colliery, line of drams in the Graigola Seam - note the unsupported sandstone roof, c.1977 Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Modern concrete viaduct linking the mine with the washery, Blaengwrach Colliery, c.1977. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Overmen inspecting a shearer on the Six Feet Seam, Brynlliw Colliery 15 December 1977 Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Treforgan Colliery with the afternoon shift waiting to descend 1979 Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Wyndham/Western Colliery, turntable near pit bottom, c.1979 Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Blaenserchen Colliery pit bottom in 1979 with supplies and a dram of waste. Math Eitemau Uwchlwytho gan Amgueddfa Cymru
Cwmtillery Colliery, decorative brickwork on ventilation fan building, 1980 Math Eitemau Uwchlwytho gan Amgueddfa Cymru
