Archive NumberTitleLevelDescriptionMediumImagesArchive Number6514466Title70_249_0101 - Ordnance Survey Vertical Aerial Photography CollectionLevelItemDescriptionBlack and white aerial photograph of Glyn Rhonwy slate quarry taken by the Ordnance Survey on 19th October 1970 at an altitude of 7500 feet. Grid reference SH5560. Print enlargement (c. 20") taken from 9" film roll.MediumPhoto.ImagesnArchive Number6022314TitleNMR Site FilesLevelItemDescriptionLetter from Gwynfor Pierce Jones concerning Glynrhonwy Quarry.MediumText.Imagesn
