Variant of North American Industry Classification System (NAICS) 2022 Version 1.0 for Energy sector
- E - Energy sector
- 21i - E - Mining, quarrying and oil and gas extraction
- 212i - E - Mining and quarrying (except oil and gas)
- 2121 - Coal mining
- 21211 - Coal mining
- 212114 - Bituminous coal mining
- 212115 - Subbituminous coal miningCAN
- 212116 - Lignite coal miningCAN
- 2122i - E - Metal ore mining
- 21229i - E - Other metal ore mining
- 212291 - Uranium ore miningUS
- Date modified: