Mocella and his team will start X-raying scrolls from the National Library in Naples in July, with the scanners looking for lead. In 2009, computer scientist Brent Seales at the University of Kentucky in Lexington picked up on the presence of metal in the scroll ink. But its discovery in ancient Graeco-Roman ink could make it easier to read an early form of publishing – precious scrolls buried by the eruption of Mount Vesuvius in AD 79. Unrolling the charred scrolls can destroy them, so people have been X-raying the bundles in the hopes of discerning the writing inside. AdvertisementThe presence of lead means that imaging techniques could be recalibrated to pick up the metal, something at which X-rays excel. source: https://www.newscientist.com/article/2081832-lead-ink-from-scrolls-may-unlock-library-destroyed-by-vesuvius/