Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Mining and Preparation of Anthracite (booklet)
"Mining and Preparation of Anthracite" issued by the Hudson Coal Co. (USA), 1931. Booklet with grey card cover containing the title and an illustration of miners at work. Contains numerous photographs of the mining process.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.