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 Archif6210580TeitlDrawings CollectionLefelItemDisgrifiadMeasured cross-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.Delweddaun
