National Occupational Classification (NOC) 2021 Version 1.0
- 9 - Occupations in manufacturing and utilities
- 92 - Processing, manufacturing and utilities supervisors and utilities operators and controllers
- 921 - Utilities equipment operators and controllers
- 9210 - Utilities equipment operators and controllers
- 92100 - Power engineers and power systems operators
- 92101 - Water and waste treatment plant operators
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