Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by function]
8. industrial structures
9. industrial buildings
10. factories (structures)
11. [factories by function]
12. processing plants

Anotations

Scope note:

Facilities that are primarily engaged in the manufacture of paper or paper products, usually from wood, recycled paper, or other fiber pulp. Originally water-driven, modern paper mills are typically powered electrically.