North American Product Classification System (NAPCS) Canada 2017 Version 1.0

162 - Stone, sand, gravel, clay, and refractory minerals

This group comprises stone, sand, gravel, clay, and refractory minerals.

16212 - Sand, gravel, clay, and refractory minerals

This class comprises sand, gravel, clay, and refractory minerals.

162121 - Construction sand and gravel

This subclass comprises sand and gravel that has not been further processed than crushing, washing or screening.

162122 - Industrial sand

This subclass comprises industrial sand.

162123 - Clay and refractory minerals

This subclass comprises clay, and refractory minerals.