Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Amalgamated Anthracite Collieries Ltd, technical drawing
Technical drawings titled 'General Method of Face and Gate-End Roof Supports for Conveyor Systems'. Scale 4ft=1inch. Dated 11 November 1944.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.