212323 — Kaolin, Clay, and Ceramic and Refractory Minerals Mining
Description
This U.S. industry comprises (1) establishments primarily engaged in developing the mine site and/or mining clay (e.g., china clay, paper clay and slip clay) or ceramic and refractory minerals and (2) establishments primarily engaged in beneficiating (i.e., preparing) clay or ceramic and refractory minerals.
Illustrative Examples
- Bentonite mining and/or beneficiating
- Fuller's earth mining and/or beneficiating
- Common clay mining and/or beneficiating
- Kaolin mining and/or beneficiating
- Feldspar mining and/or beneficiating
- Ball clay mining and/or beneficiating
- Fire clay mining and/or beneficiating
- Shale (except oil shale) mining and/or beneficiating
Overview Facts
| NAICS Code | 212323 |
|---|---|
| Industry Title | Kaolin, Clay, and Ceramic and Refractory Minerals Mining |
| SBA Size Standard | 650 employees |
| IRS PBA Code | 212320 (rolled-up match) |
| Sectors Hierarchy | Sector 21 → 212 → 2123 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 1455 - Kaolin and Ball Clay (via SIC1987:1455→NAICS1997:212324→2002:212324→2007:212324→2012:212324→2017:212324→2022:212323)
- SIC 1459 - Clay, Ceramic, and Refractory Minerals, NEC (via SIC1987:1459→NAICS1997:212325→2002:212325→2007:212325→2012:212325→2017:212325→2022:212323)
- SIC 3295 - Minerals and Earths, Ground or Otherwise Treated (via SIC1987:3295→NAICS1997:212324→2002:212324→2007:212324→2012:212324→2017:212324→2022:212323)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 212323:
- Sector 21 Directory Hub — List of related industries in the Mining, Quarrying, and Oil and Gas Extraction sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 2123
Frequently Asked Questions (FAQ)
Is 212323 a valid 2022 NAICS code?
NAICS 212323 is 'Kaolin, Clay, and Ceramic and Refractory Minerals Mining', a 2022 U.S. national industry under Sector 21 (Mining, Quarrying, and Oil and Gas Extraction); the SBA small-business size standard is 650 employees.
What is the SBA size standard for NAICS 212323?
The SBA small business size standard for NAICS 212323 is 650 employees (based on employees).
What is the legacy SIC code mapping for 212323?
NAICS code 212323 maps to the legacy 1987 SIC codes: 1455 - Kaolin and Ball Clay, 1459 - Clay, Ceramic, and Refractory Minerals, NEC, 3295 - Minerals and Earths, Ground or Otherwise Treated.