Oddi wrth Wicipedia, y gwyddoniadur rhydd.
	    
	    	    	    
	    Gall y ffeil hon gael ei defnyddio gan nifer o brosiectau eraill.
| Description | English: Quarrymen splitting slate at Dinorwig Quarry, Wales c. 1910 Deutsch: Steinbrucharbeiter spalten Schiefer | 
| Source | Scanned by Rhion Pritchard 01/09/2006 from "Dinorwic Slate Quarries, Portdinorwic" an album of photographs published by the Dinorwic Quarry Co. c. 1910. | 
| Date | c. 1910 | 
| Author | unkown | 
| Permission | Photographs are out of copyright. | 
Cysylltiadau'r ddelwedd
Mae'r tudalennau isod yn cysylltu i'r ddelwedd hon: