• Cymraeg
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    View looking east to the 'R' incline plane and drum house at Diffwys Slate Quarry.Download and purchase options
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    NPRNTitleType Of SiteArchivesImagesNPRN421263TitleR' Counter-Balance Incline and Drum House, Floors 7 to 9, Diffwys Slate QuarryType Of SiteCOUNTER BALANCE INCLINEArchives2Images1