# NAICS 212323: Kaolin, Clay, and Ceramic and Refractory Minerals Mining

Breadcrumb: [NAICS codes](https://bidrover.com/naics) › [212323 Kaolin, Clay, and Ceramic and Refractory Minerals Mining](https://bidrover.com/naics/212323)

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.

- NAICS code: 212323
- Title: Kaolin, Clay, and Ceramic and Refractory Minerals Mining
- Sector: 21 Mining, Quarrying, and Oil and Gas Extraction
- Subsector: 212 Mining (except Oil and Gas)
- Industry group: 2123 Nonmetallic Mineral Mining and Quarrying
- NAICS industry: 21232 Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying
- SBA size standard: 650 employees
- Open bids on BidRover: 0

## Open bids (0)

No open bids cite this code right now.

## Frequently asked questions

### What is NAICS code 212323?

NAICS 212323 is "Kaolin, Clay, and Ceramic and Refractory Minerals Mining" in the 2022 North American Industry Classification System, in sector 21 (Mining, Quarrying, and Oil and Gas Extraction). 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.

### What is the SBA size standard for NAICS 212323?

A business is small under NAICS 212323 at or below 650 employees, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.

### How many government bids are open under NAICS 212323?

No open bid in BidRover cites NAICS 212323 right now. Many state and local notices do not list a NAICS code, so a keyword alert for this work catches more of them.

### How do I get alerts for NAICS 212323 bids?

Save an alert on this page. A free account gets new matching bids by weekly email; the Team plan ($19/mo) sends daily alerts with match scores, the buyer, source link and documents.

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- [211120 Crude Petroleum Extraction](https://bidrover.com/naics/211120)
- [212321 Construction Sand and Gravel Mining](https://bidrover.com/naics/212321)
- [212322 Industrial Sand Mining](https://bidrover.com/naics/212322)
- [212311 Dimension Stone Mining and Quarrying](https://bidrover.com/naics/212311)
- [212312 Crushed and Broken Limestone Mining and Quarrying](https://bidrover.com/naics/212312)

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Code titles and definitions: U.S. Census Bureau, North American Industry Classification System (NAICS), 2022 (https://www.census.gov/naics/). Size standards: U.S. Small Business Administration, Small Business Size Standards, 13 CFR 121.201, eCFR text current as of 2026-10-21 (https://www.ecfr.gov/current/title-13/section-121.201).

BidRover lists bids from official public sources. It is not an issuing authority; confirm the NAICS code and size standard named in each solicitation.