Rhif ArchifTeitlLefelDisgrifiadCyfrwngDelweddauRhif Archif6148467Teitl005045_50 - RCAHMW Black and White Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW Black and white oblique aerial photograph of Nant Gwrtheyrn Quarry, Pistyll, taken by T.G.Driver on the 26/06/2000CyfrwngPhoto.DelweddaunRhif Archif6148468Teitl2000_CS_0538 - RCAHMW Colour Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW colour slide oblique aerial photograph of Nant Gwrtheyrn Quarry, Pistyll, taken by T.G.Driver on the 26/06/2000CyfrwngPhoto.DelweddaunRhif Archif6072167TeitlOAI_03_04 - Outsize Additional InformationLefelItemDisgrifiadNant Gwrtheyrn Quarries, Gwynedd; Feasability Study for the quarries of Nant Gwertheyrn, covering Cae'r Nant, Porth Y Nant & Carreg Y Llam, by Posford Duvivier Consulting Engineers for Dwyfor County Council, dated 23/04/93.CyfrwngCartographic, Text, Photo.Delweddaun
