| Description | Reports on explosions etc. Volume marked '7'.
Reports cover: Auchinraith Colliery, Blantyre, Lanarkshire, 1930; Grove (Brownhills) Colliery, Brownhills, Staffordshire, 1930; Houghton Main Colliery, near Barnsley, Yorkshire, 1930; Newdigate Colliery, near Nuneaton, Warwickshire, 1931; |