My attention was drawn especially to his [John de Monins Johnson's] account of the discovery of large amounts of blank papyrus in the rubbish mounds of Antinoopolis: “[Mound] N was remarkable throughout for what is often a feature of late mounds, the quantity of blank papyrus it provided. In this case sacks might have been filled.”This PaleoJudaica post from some years ago seems relevant.
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