French officials are considering cleaning the inside surfaces of the cathedral with one of the newest technologies in art restoration: lasers. Chicago-based art restoration expert Bartosz Dajnowski invented the technique, which his company, GC Laser Systems, tested inside Notre Dame last month.
The technique uses light to weed out contamination without chemicals or mechanical abrasion, he says. Dajnowski’s lasers have cleaned the facade of the U.S. Supreme Court building and the lions in front of the New York Public Library.
https://www.wbur.org/hereandnow/2020/12/21/notre-dame-cathedral-lasers
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