Material relating to the activites of a number of conciliation boards, in particular meetings between representatives of the Monmouthshire and South Wales Coal Owners Association and representatives of various sections of workers, including (but not limited to) winding enginemen, craftsmen, clerks, colliery examiners, hauliers and weighers. The majority of the records cover meetings of the Conciliation Board Standing Disputes Committee and of other meetings between both sides to discuss issues relating mainly to wages and work rules.