What it takes to clean industrial soot and grime from a Pittsburgh church’s murals
- Posted on June 5, 2025
- By The Toronto Star
- 1 Views
What it takes to clean industrial soot and grime from a Pittsburgh church’s murals
MILLVALE, Pa. (AP) — How do you conserve 80-year-old murals that have accumulated decades' worth of soot, salt and other deterioration?
