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
- 211 - Oil and gas extraction
- 2111 - Oil and gas extraction
- 21111 - Oil and gas extraction (except oil sands)CAN
- 211110 - Oil and gas extraction (except oil sands)CAN
- 21114 - Oil sands extractionCAN
- 211141 - In-situ oil sands extractionCAN
- 211142 - Mined oil sands extractionCAN
- 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
- 213i - E - Support activities for mining, and oil and gas extraction
- 2131i - E - Support activities for mining, and oil and gas extraction
- 21311i - E - Support activities for mining, and oil and gas extraction
- 213111 - Oil and gas contract drilling
- 213118 - Services to oil and gas extractionCAN
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