Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. People (hierarchy name)
4. people (agents)
5. [people by occupation]
6. [people in engineering, building trades and planning]
7. engineers

Anotations

Scope note:

Refers to people employed in the design and development of the processes of creating chemicals and in the operation and requirements of a chemical plant. They are concerned with data and predictions that often have to be obtained or confirmed with pilot experiments. Their activities differ from chemists in that chemists deal with the research of and actual creation of chemicals.