Miners digging for coal, South Wales, 24 June 1931.
© NMeM / Daily Herald Archive / Science & Society Picture Library
Photograph taken by James Jarche of the Daily Herald newspaper for a series of articles called 'In Search of Wales' written by H V Morton in 1934. The pictures included the first flash photographs taken underground, which involved a considerable risk of an explosion. The articles were later published together in a book of the same name.