Printed material, 1935-1947, relating to the history and activities of several Monmouthshire and South Wales Coal Owners Association member companies including the Ocean Coal Company, Ltd., United National Collieries, Ltd., Powell Duffryn Associated Collieries, Ltd., Gueret, Llewellyn & Merrett, Ltd., and the Amalgamated Anthracite Collieries Ltd. Also a printed copy (bilingual) of agreed Rules and Regulations, 1849, in place at Cymmer Colliery.