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 (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
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
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)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 3820 — Mining, Rock Drilling, Earth Boring, and Related Equipment
- PSC 9620 — Minerals, Natural and Synthetic
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 212323 valid in 2022? ▾
Yes, 212323 is a valid 6-digit 2022 NAICS national industry code representing 'Kaolin, Clay, and Ceramic and Refractory Minerals Mining' under Sector 21 in the official classification index.
What is the SBA size standard for NAICS code 212323? ▾
The Small Business Administration (SBA) has established a small business size standard of 650 employees for NAICS code 212323 (Kaolin, Clay, and Ceramic and Refractory Minerals Mining), calculated based on employees.
What is the legacy SIC equivalent for NAICS 212323? ▾
According to official Census Bureau concordance tables, NAICS code 212323 (Kaolin, Clay, and Ceramic and Refractory Minerals Mining) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 1455 - Kaolin and Ball Clay, 1459 - Clay, Ceramic, and Refractory Minerals, NEC, 3295 - Minerals and Earths, Ground or Otherwise Treated.
Related Pages & Tools
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.
- NAICS 212323 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Kaolin, Clay, and Ceramic and Refractory Minerals Mining).
- 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.