Being a lover of steam locomotives is a bit like chasing a setting sun - with the real diehards searching out survivors further and further from their home territory. Many enthusiasts would mark August 1968 as the end of ‘proper’ steam locomotives in the United Kingdom, the date when British Rail withdrew their final examples. However, for those in the know, steam continued to contribute to the British economy in industrial settings for nearly a further two decades. In the coal and ironstone mining industry, in power generation, in chemical factories, steelworks and foundries, small,...