North American Product Classification System (NAPCS) Canada 2017 Version 2.0
162 - Stone, sand, gravel, clay, and refractory minerals
This group comprises stone, sand, gravel, clay, and refractory minerals.
16211 - Stone
This class comprises stone.
162111 - Rough dimension stone
This subclass comprises rough dimension stone.
162112 - Crushed stone
This subclass comprises crushed stone.
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