NAICS Code 212390 — Other Nonmetallic Mineral Mining and Quarrying

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is the only national industry under 21239 (Other Nonmetallic Mineral Mining and Quarrying).

Code	212390
Title	Other Nonmetallic Mineral Mining and Quarrying
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	600 employees

Official definition (2022 NAICS)

This industry comprises establishments primarily engaged in developing the mine site, mining, and/or milling or otherwise beneficiating (i.e., preparing) nonmetallic minerals (except coal, stone, sand, gravel, clay, and ceramic and refractory minerals). Drylake brine operations are included in this industry, as well as establishments engaged in producing the specified minerals from underground and open pit mines.

Illustrative Examples:

Barite mining and/or beneficiating

Phosphate rock mining and/or beneficiating

Borate, natural, mining and/or beneficiating

Potash mining and/or beneficiating

Peat mining and/or beneficiating

Rock salt mining and/or beneficiating

Is a business under 212390 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 212390 qualifies as a small business if it does not exceed 600 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 212390 sits in the hierarchy

Level	Code	Title
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	21239	Other Nonmetallic Mineral Mining and Quarrying
National Industry	212390	Other Nonmetallic Mineral Mining and Quarrying

No direct SIC mapping is shown for this code: it was introduced or redefined after the official 1987 SIC ↔ 2002 NAICS concordance. Use the crosswalk tool to explore related legacy codes.

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.