This book, originally published in 1974, examines the changes that took place in the market position of the coal industry in the twentieth century. It examines in detail the position of the industry during the two World Wars, the problems of the inter-war years, the effects of nationalisation and the coal shortage after the Second World War, the decline of the markets in the 1960s and the consequences of the energy crisis of the early 1970s. The book analyses what problems the changes caused, and what measures were taken to try to overcome them. Looking in detail at the industrial disputes of 1971/2 and 1973/4 the book shows how the miners' actions fitted in closely with their past experiences and behaviour patterns.