Binnie and Bessie

S1, E6: Roger Varley arrives at Winkstead Hall to clean Bessie and Binnie. Roger is cleaning Binnie when Brackett the butler comes over to tell him the water level in Winkstead Hall is very low. The only way to pump the water is to burn coal to get the pumping engine going, but there is no coal left. They will have to pick it up form Treadles Wharf.