Material relating to the foundation of the Monmouthshire and South Wales Coal Owners Association, and material relating to legal cases the Association members were involved with or that affected the interests of the Association as a whole, in particular, those relating to railway rates and charges. These cases were heard before several courts and tribunals including the High Court of Justice, the Court of Appeal, the House of Lords, the House of Commons, the Court of Enquiry, Select and Departmental Committees, Royal Commissions, the Railway Rates Tribunal and the Coal Industry National Compensation Tribunal.