Did you ever read through THE RAPE OF THE TURIN SHROUD by Meacham out in Hong Kong of all places?
Yes. It was an ill considered, ill advised, and poorly thought out "restoration" of that which did not need restoration. Mechthild Flury-Lemburg believed that the fire that occurred in 1536 was still slowly burning and convinced the custodian of the Shroud that the damaged areas needed to be cut away. She also vacuumed the Shroud, washed parts of it, and tried to stretch wrinkles out of it... and then ironed it! Any evidence on the Shroud from the environment was cleaned away and collected into vials... but now it was no longer in situ and data was lost. She's an idiot.