[delwedd: Amdanom ni]
[delwedd: First rescue brigade, Big pit (b/w photo)]
[delwedd: Workforce and management of Deep Navigation colliery, c1910 (b/w photo)]
[delwedd: Clayton tinplate works, Pontardulais, 1957 (photo)]
[delwedd: Bwllfa Colliery: formal group of five miners (b/w photo)]
[delwedd: Aberfan disaster, 1966 (b/w photo)]
[delwedd: Quarrymen splitting and pressing slate blocks (b/w photo)]
[delwedd: Lewis Merthyr underground officials, 1906 (b/w photo)]
[delwedd: Baenavon collieries rescue brigade (b/w photo)]
