Stone sculptures, often displayed outdoors, are vulnerable to damage caused by industrial pollutants like sulfur dioxide, particulate matter, and acid rain. Protecting these artworks requires a combination of preventive and restorative measures.

1. Regular Cleaning: Gently wash sculptures with distilled water and soft brushes to remove surface pollutants. Avoid harsh chemicals that may erode the stone.

2. Protective Coatings: Apply breathable sealants (e.g., siloxane-based coatings) to create a barrier against pollutants while allowing moisture to escape, preventing internal damage.

3. Sheltering or Relocation: If possible, move sculptures indoors or install protective canopies to minimize exposure to polluted air.

4. Pollution-Resistant Materials: For new sculptures, opt for denser stones like granite or marble, which are less porous and more resistant to chemical corrosion.

5. Environmental Monitoring: Install air quality sensors nearby to track pollution levels and adjust maintenance schedules accordingly.

6. Professional Restoration: Engage conservators for deep cleaning and repairs if damage occurs, ensuring the use of specialized techniques.

By implementing these strategies, stone sculptures can withstand industrial pollutants and retain their beauty for generations.