Here in our second volume featuring these collieries, we portray steam at Maerdy, Merthyr Vale, Elliot, Ty Mawr, Cym, Marine, Benyon Blaina, Celynon North, Celynon South, Hafodyrynys, Tal Y Wain, Blaenavon and Tredegar.
We see examples of industrial locomotives from five different builders as well as ex-GWR tanks, 9600, 9792 and 7754, in all weather conditions from sun to winter snow.
Horse worked mines are also visited. These used narrow gauge track and at Darran open cast site we see horse traction being used before the arrival of steam.
Both steam and diesel BR motive power served the valleys and we record the various comings and goings of coal trains.
All filmed in colour by enthusiasts who found these industrial locations both fascinating and friendly after the demise of BR steam in the valleys of Wales.