Sand, Gravel, Clay, & Ceramic & Refractory Minerals Mining & Quarrying
Key Figures
Figures are published for NAICS 21232 directly.
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Official definition
This industry comprises (1) establishments primarily engaged in developing the mine site and/or mining, quarrying, dredging for sand and gravel, or mining clay (e.g., china clay, paper clay and slip clay) and (2) preparation plants primarily engaged in beneficiating (e.g., washing, screening, and grinding) sand and gravel, clay, and ceramic and refractory minerals.
Source: US Census Bureau, 2017 NAICS Definitions. Public domain.
Which code does this activity belong in?
The boundary between sand, gravel, clay, and ceramic and refractory minerals mining and stone mining lies in the type of material extracted. Code 21232 covers establishments mining sand, gravel, and clay along with ceramic and refractory minerals, including their beneficiation through washing, screening, and grinding. Stone Mining and Quarrying classifies establishments extracting dimension stone in rough blocks or slabs, as well as crushed and broken stone, with beneficiation activities like crushing and pulverizing. Materials such as barite, phosphate rock, borate, potash, peat, and rock salt are classified in Other Nonmetallic Mineral Mining and Quarrying instead.