Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. [subtractive processes and techniques]
6. cleaning
7. abrasive cleaning

Anotations

Scope note:

Minimally invasive stone cleaning treatments for historic masonry in sculpture and architecture that aim to avoid damage to surface topography of material while mechanically removing the soiling agent or coating.