In the news, the Cleveland area art conservation center McKay Lodge Conservation Laboratory, Inc. working with the Freer Gallery using dry ice carbon dioxide (CO2) blasting to clean a Saint-Gaudens sculpture from the collection.
Source: This museum is blasting precious sculptures with dry ice. But why?
For additional information on dry ice carbon dioxide (CO2) blasting:
Cleaning of outdoor sculpture at the Cleveland Museum of Art
ICE COLD – Symposium of dry ice carbon dioxide (CO2) cleaning
Using dry ice carbon dioxide (CO2) blasting to remove epoxy from original paint on iron