DVD B&R 147: Steam In The Valleys Part 2DVD B&R 147: Steam In The Valleys Part 2 19. 75 The valleys of Wales once supplied coal to the world. In the late 1960s and early 1970s, some collieries were still shunted by steam locomotives. 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