Rhif ArchifTeitlLefelDisgrifiadCyfrwngDelweddauRhif Archif6210625TeitlAdditional InformationLefelBatchDisgrifiadField drawings and plottings of the Hetty Winding House at Gyfeillion Colliery, produced by Geoff Ward and David Percival 2001.CyfrwngGraphic.DelweddaunRhif Archif6210581TeitlDrawings CollectionLefelItemDisgrifiadMeasured long-section drawing of Hetty Pit Winding Engine House at Gyfeillion Colliery produced by Geoff Ward, 2001.CyfrwngGraphic.DelweddaunRhif Archif6210582TeitlDrawings CollectionLefelItemDisgrifiadMeasured plan of Hetty Pit at Gyfeillion Colliery produced by Geoff Ward, 2003.CyfrwngGraphic.DelweddaunRhif Archif6210580TeitlDrawings CollectionLefelItemDisgrifiadMeasured cross-section drawing of Hetty Pit Winding Engine House at Gyfeillion Colliery produced by Geoff Ward, 2001.CyfrwngGraphic.Delweddaun
