2022 NAICS national industry in sector 21 Mining, Quarrying, and Oil and Gas Extraction
212321 Construction Sand and Gravel Mining
NAICS 212321 is the US industry code for construction sand and gravel mining. This U.S.
- Code
- 212321 (2022 NAICS)
- Title
- Construction Sand and Gravel Mining
- Part of
- Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying
- SBA small business limit
- Up to 500 employees
- Closest UK SIC
- 08110, 08120 (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 U.S. industry comprises establishments primarily engaged in one or more of the following: (1) operating commercial grade (i.e., construction) sand and gravel pits; (2) dredging for commercial grade sand and gravel; and (3) washing, screening, or otherwise preparing commercial grade sand and gravel.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Mining industrial grade sand are classified in U.S. Industry 212322, Industrial Sand Mining.
- Manufacturing ready-mix concrete are classified in Industry 327320, Ready-Mix Concrete Manufacturing.
- Construction projects involving water resources (e.g., dredging and land drainage) are classified in Industry 237990, Other Heavy and Civil Engineering Construction.
Activities listed under 212321
The Census index assigns these 7 activities to this code. If your business matches one, this is your code.
- Common sand quarrying and/or beneficiating
- Construction sand and gravel beneficiating (e.g., grinding, screening, washing)
- Construction sand or gravel dredging
- Gravel quarrying and/or beneficiating
- Pebbles (except grinding) mining and/or beneficiating
- Sand and gravel quarrying (i.e., construction grade) and/or beneficiating
- Sand, construction grade, quarrying and/or beneficiating
SBA size standard for 212321
To count as a small business for SBA loans and federal contracts under NAICS 212321, your business (including affiliates) must not exceed 500 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: 0810), so treat them as a starting point and check the definition.
- 08110Quarrying of ornamental and building stone, limestone, gypsum, chalk and slateUK SIC
- 08120Operation of gravel and sand pits; mining of clays and kaolinUK SIC
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
Data last changed November 14, 2026. How this page is built.