NAICS 2022 nationalIndustry ** USA Verified: Census NAICS 2022 · 2026-01-01

NAICS 212323 — Kaolin, Clay, and Ceramic and Refractory Minerals Mining

Kaolin, Clay, and Ceramic and Refractory Minerals Mining

NAICS 212323 is the national industry code for kaolin, clay, and ceramic and refractory minerals mining establishments in the United States. The Small Business Administration sets a size standard of 650 for this classification. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.

SBA: 650 View full SBA standard

Related industries in 21232 (Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying)

View parent 21232

212321

Construction Sand and Gravel Mining

212322

Industrial Sand Mining

Official Illustrative Examples

Primary activities officially recognized by Census Bureau / Statistics Canada:

fill dirt pits gravel pit sand pit or quarry

Complete Index of Activities (23 recognized activities) ▼

abrasive sand mining

blast sand mining

common sand mining

construction sands, crude, mining

enamel sand mining

fill dirt pits

filter sands, crude, mining

filtration sand mining

foundry sand mining

glass sand mining

gravel and sand grinding and screening

gravel and sand pits

gravel pit

grinding sand mining

industrial sand mining

mobile crushing of sand and gravel

mortar sands, mining

moulding sand mining

natural sand, other than metal-bearing, manufacturing

pebbles mining

sand and gravel mining and quarrying

sand pit or quarry

silica sand, mining

Official data

Feature	Description
Official name	North American Industry Classification System (NAICS) 2022
Issuing authority	U.S. Census Bureau with OMB, Statistics Canada, and INEGI
Tax authority	Internal Revenue Service (IRS)
Purpose	Statistical business classification and federal contracting (SAM.gov, SBA standards)
Used in	SAM.gov registration, SBA size determinations, IRS tax classification, SEC EDGAR (via SIC crosswalk)
Active since	2022 (current edition)
Hierarchy level	Sector (2-digit)
Source	https://www.census.gov/naics/