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    Archive NumberTitleLevelDescriptionMediumImagesArchive Number6018171TitleAdditional InformationLevelItemDescriptionCilcewydd Weir Holt, Leighton Park Estate; scale drawing of unknown origin showing plan and section views, from Stephen Hughes' Leighton projectMediumGraphic.ImagesnArchive Number6018174TitleDrawings CollectionLevelItemDescriptionCopy of RCAHMW drawing by Tony Parkinson showing hydraulic ram intake sluice gate as existing and reconstructed, Glanhafren, Forden (original drawing at Ironbridge Institute).MediumGraphic.ImagesnArchive Number6018172TitleDrawings CollectionLevelItemDescriptionRCAHMW drawing by Tony Parkinson showing hydraulic ram intake, Glanhafren, Forden.MediumGraphic.ImagesnArchive Number6018173TitleDrawings CollectionLevelItemDescriptionCopy of a non RCAHMW drawing by Nature Conservancy Council, showing section and detail of hydraulic ram intake at Glanhafren, Forden.MediumGraphic.Imagesn