North American Product Classification System (NAPCS) Canada 2017 Version 2.0
- 671 - Mining and oil and gas support services
- 67111 - Support services for oil and gas extraction (except oil and gas exploration)
- 671111 - Support services for oil and gas extraction (except oil and gas exploration)
- 6711111 - Development drilling for oil and gas
- 6711112 - Site development and maintenance services for oil and gas fields
- 6711113 - Enhanced recovery techniques for oil and gas
- 67112 - Support services for mining and quarrying (except mineral exploration)
- 671121 - Support services for mining and quarrying (except mineral exploration)
- 6711211 - Site development for mining
- 6711212 - Other support services for mining and quarrying (except mineral exploration)
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