Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Drill head
Diamond drill head, used at Cwmystwyth mines during the early part of this century.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Diamond drill head, used at Cwmystwyth mines during the early part of this century.