Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Pantyffynnon Colliery, report
Folder containing three handwritten reports concerning the testing of air samples in the Rock, Stanllyd and Brynlloi seams, Pantyffynnon Colliery. Dated 11 May 1958.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.