How do you conserve 80-year-old murals that have accumulated decades' worth of soot, salt and other deterioration?

Workers have completed a phase of conservation work on historic murals by the late artist Maxo Vanka at St. Nicholas Croatian Catholic Church near ...

How do you conserve an incomparable set of murals that have accumulated more than 80 years’ worth of soot, salt and other ...

Workers have completed a phase of conservation work on historic murals by the late artist Maxo Vanka at St. Nicholas Croatian ...