Statistical information produced by, or collected by, the Monmouthshire and South Wales Coal Owners Association relating to all aspects of the coal trade, both within the United Kingdom and in other countries across the world. Material comprises bound volumes of tabulated information regarding the UK and international coal industries, international trade, wage rates for miners, colliery price lists, annual summaries of Association members, revisions of Assurances, and statistics on the coal trade of foreign countries.