I've worked on some of those ingot bogies. At Rotherham they came in 2 sizes, x4 and x8 ingot moulds (smaller moulds than those). The x4 were literally 4 wheel bogies, no suspension, a big steel "buffer" at each end and a very low hook. The x8 were just like two little ones stuck together but with pivoting bogies at each end. Steel Peech and Tozer had some big Hunslet 0-6-0 made with extra ballast to move them, originally at Templeborough, later at Aldwarke. There is a kit for the Hunslets. I know two had their ingot bogie buffers removed, were cleaned, polished, painted maroon and sent to British Leyland in the late 80's/early 90's when I worked there as I did the replacement handrails on one. Torpedo wagons were used at the former Tinsley Park steelworks. There was a very bad, fatal accident with one where a cold torpedo was shunted into the melting shop by mistake (they were normally preheated) and teemed into. It had been outside in the rain awaiting repair and had a load of water in it. Upon the molten steel hitting the water it immediately evaporated and the torpedo exploded. I believe it killed the crane driver, shunter and loco driver. The bottom one looks more like a slag ladle than a steel ladle to me. These were used at Templeborough too to take steel slag from the melting shop, across the road at Ickles to the slag works adjacent to Brinsworth Strip Mills where it was turned into tarmac for roads. I think the slag works is still there but it's not rail connected any more.