North American Product Classification System (NAPCS) Canada 2017 Version 2.0
- 641 - Oil and gas and mineral exploration
- 64111 - Oil and gas exploration
- 641111 - Oil and gas exploration
- 6411111 - Exploration drilling for oil and gas
- 6411112 - Other oil and gas exploration
- 64121 - Mineral exploration
- 641211 - Mineral exploration
- 6412111 - Mineral exploration
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