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    Rhif ArchifTeitlLefelDisgrifiadCyfrwngDelweddauRhif Archif6426968Teitl2001-0134 - Investigators' PhotographsLefelBatchDisgrifiadPenrhyn Slate Quarry, Water balance lift: Photo survey comprising 1 B&W print taken by S. R. Hughes, June 2001.Cyfrwng1 print. Photo.DelweddaunRhif Archif6426969Teitl2001-0134 - Investigators' PhotographsLefelItemDisgrifiadLooking down shaft of 'Lord' water balance lift, Penrhyn Slate Quarry.CyfrwngPhoto.DelweddaunRhif Archif6427650Teitl960329 - Investigators' PhotographsLefelItemDisgrifiadWater balance lift 'Lord', from W, Penrhyn Slate Quarries.CyfrwngPhoto.DelweddaunRhif Archif6427651Teitl960329 - Investigators' PhotographsLefelItemDisgrifiadWater balance lift 'Lord', from W, Penrhyn Slate Quarries.CyfrwngPhoto.DelweddaunRhif Archif6427659Teitl960329 - Investigators' PhotographsLefelItemDisgrifiadWater balance lift 'Lord' from SW, Penrhyn Slate Quarries.CyfrwngPhoto.DelweddaunRhif Archif6427658Teitl960329 - Investigators' PhotographsLefelItemDisgrifiadWater balance lift 'Lord' from SW, Penrhyn Slate Quarries.CyfrwngPhoto.Delweddaun