Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Collins Miner (brochure)
Content summary - the development of the 'Collins Miner', a remote controlled cutting and loading machine, from concept to installation. Four pages, stapled.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.