Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Frog Lane Colliery, photograph
Frog Lane Colliery roadway inspection. The manager examines the state of the haulage rope and sheaves on his way to the face. The presence of a double track indicates that the system is being worked on a endless haulage system. The signalling wires to the haulage can be seen on the left.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.