Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Gleision Colliery, notice
2007.12/18 (1) - In-Seam Advancing Stalls with Retreating Flanks. Dated 17 August 1995. 2007.12/18 (2) - Advancing Stall Completed, Retreating Stalls Being Developed. Both black print on white paper encapsulated in plastic.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.