2022 NAICS national industry in sector 21 Mining, Quarrying, and Oil and Gas Extraction

212390 Other Nonmetallic Mineral Mining and Quarrying

NAICS 212390 is the US industry code for other nonmetallic mineral mining and quarrying. It covers 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).

Code
212390 (2022 NAICS)
Title
Other Nonmetallic Mineral Mining and Quarrying
Part of
Nonmetallic Mineral Mining and Quarrying
SBA small business limit
Up to 600 employees
Closest UK SIC
08910, 08920, 08930, 08990 (details)

Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.

Official definition

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.

Examples Census gives

Source: US Census Bureau, 2022 NAICS descriptions.

When to use a different code

Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:

Source: US Census Bureau, 2022 NAICS cross-references.

Activities listed under 212390

The Census index assigns these 149 activities to this code. If your business matches one, this is your code.

Source: US Census Bureau, 2022 NAICS index file.

SBA size standard for 212390

To count as a small business for SBA loans and federal contracts under NAICS 212390, your business (including affiliates) must not exceed 600 employees. Check your business.

Source: SBA table of size standards, effective March 17, 2023.

Closest UK SIC 2007 codes

There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 0891, 0893, 0810, 0892, 0899), so treat them as a starting point and check the definition.

Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.

Data last changed November 14, 2026. How this page is built.