North American Industry Classification System (NAICS) Canada 2017 Version 3.0
- 21 - Mining, quarrying, and oil and gas extraction
- 212 - Mining and quarrying (except oil and gas)
- 2122 - Metal ore mining
- 21223 - Copper, nickel, lead and zinc ore mining
- 212231 - Lead-zinc ore miningUS
- 212232 - Nickel-copper ore miningCAN
- 212233 - Copper-zinc ore miningCAN
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