"'Boring at the coal face in one of the Durham Collieries', 20th century."

"The Rhondda Valley, 1931."

"Merthyr by-election, Wales, 31 May 1934."

"Merthyr by-election, Wales, 31 May 1934."

"Rhondda by-election, Wales, 20 March 1934. "

"A miner and his family outside their home, North Wales, 1931."

"Striking miners returning to their homes, Wales, 6 September 1936."

"Striking miners returning to their homes, Wales, 6 September 1936."

"Rhondda by-election, Wales, 20 March 1934. "

"'Cooling hot coke by overhead water sprays', 20th century."

"Moving coal in the Number 1 Pit in Powell, Wales, 1931."

"Striking miners returning to their homes, Wales, 6 September 1936."