NAICS 212311

Overview

The North American Industry Classification System (NAICS) is the framework U.S. federal statistical agencies use to categorize business establishments for economic data collection and reporting. Developed by the Office of Management and Budget with Canada and Mexico and adopted in 1997 to replace SIC, the current NAICS vintage is 2022. ¹
NAICS 212311 covers establishments primarily engaged in developing mine sites and/or mining or quarrying dimension stone as rough blocks and slabs. Dressing (cutting, shaping, finishing) is excluded from this industry and classified under manufacturing. ²

What this NAICS covers

• Developing dimension stone quarry sites for extraction of rough blocks and slabs. ²
• Mining and quarrying natural stone for dimension use (not crushed), including extraction as unprocessed blocks and/or slabs. ²
• On-site activities customary to mine development for dimension stone (e.g., removal of overburden and site preparation). ²
• Operating dimension stone quarries on own account or under contract/fee arrangements. ²
• Participation in the Stone Mining and Quarrying industry group alongside crushed and broken stone industries. ²
• Inclusion in NAICS 21231 industry group where beneficiating activities are defined at the group level (not specifically within NAICS 212311). ²

Related NAICS and PSC codes

Type	Code	Descriptor
NAICS	212312	Crushed and Broken Limestone Mining and Quarrying
NAICS	212313	Crushed and Broken Granite Mining and Quarrying
NAICS	327991	Cut Stone and Stone Product Manufacturing
PSC	5610	Mineral Construction Materials, Bulk (includes asphalt, gravel, lime, sand, and rough dimension stone) 4

Scope notes and exclusions

• Dressing dimension stone and manufacturing stone products are classified in NAICS 327991, not in NAICS 212311. ²
• Crushed and broken stone operations are classified in NAICS 212312, NAICS 212313, or NAICS 212319, rather than in dimension stone mining. ²
• When the government buys rough dimension stone as a commodity, common product codes include PSC 5610; cut and polished stone products fall under PSC 5620. ⁴

Frequently asked questions

• What does NAICS 212311 include?

  • It includes mine-site development and the extraction or quarrying of dimension stone in rough blocks or slabs. It does not include dressing or manufacturing of stone products, which are assigned to NAICS 327991. ²

• How is NAICS 212311 different from crushed stone industries?

  • NAICS 212311 covers dimension stone (rough blocks/slabs). Crushed and broken stone operations are classified in NAICS 212312, NAICS 212313, or NAICS 212319. ²

• Does on-site cutting or finishing change the NAICS?

  • Yes. Establishments primarily engaged in dressing (cutting, shaping, finishing) dimension stone are classified in NAICS 327991 rather than NAICS 212311. ²

• Which PSC codes commonly align with dimension stone buys?

  • Rough dimension stone as a bulk construction material is often coded under PSC 5610; cut or polished stone products align to PSC 5620. Always code based on the exact item purchased. ⁴

• What is the current NAICS vintage used for economic statistics?

  • The current vintage is 2022, and Census maintains the official industry descriptions and search tools on the 2022 NAICS basis. ¹

Useful resources

• Census NAICS — introduction and 2022 NAICS search tools. ¹
• Census NAICS — Stone Mining and Quarrying and 212311 industry description. ²
• Census NAICS — 2022 NAICS descriptions reference files. ³

References

1. U.S. Census Bureau — North American Industry Classification System (NAICS) main page and 2022 NAICS search. https://www.census.gov/naics
2. U.S. Census Bureau — 2022 NAICS: 212311 Dimension Stone Mining and Quarrying. https://www.census.gov/naics/?input=212311&year=2022&details=212311
3. U.S. Census Bureau — Industry Reference Files: 2022 NAICS Descriptions. https://www.census.gov/programs-surveys/nonemployer-statistics/technical-documentation/reference/naics-descriptions.html
4. U.S. General Services Administration — Product and Service Code (PSC) Manual (April 2025), PSC 5610 and 5620 definitions. https://www.acquisition.gov/psc-manual/all