Variant of North American Industry Classification System (NAICS) 2022 Version 1.0 for Energy sector
- 3112 - Grain and oilseed milling
- 31121 - Flour milling and malt manufacturing
- 311211 - Flour millingUS
- 311214 - Rice milling and malt manufacturingCAN
- 31122 - Starch and vegetable fat and oil manufacturing
- 311221 - Wet corn millingUS
- 311224 - Oilseed processingCAN
- 311225 - Fat and oil refining and blendingUS
- 31123 - Breakfast cereal manufacturing
- 311230 - Breakfast cereal manufacturing
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