# NAICS 212311: Dimension Stone Mining and Quarrying

The SBA size standard for NAICS 212311 is 500 employees (13 CFR 121.201).

| Field | Value |
| --- | --- |
| Code | 212311 |
| Title | Dimension Stone Mining and Quarrying |
| Level | 6 |
| Parent | 21231 |
| Size standard | 500 employees |
| Footnote | - |

## Description

This U.S. industry comprises establishments primarily engaged in developing the mine site and/or mining or quarrying dimension stone (i.e., rough blocks and/or slabs of stone).

## Sources

- Census NAICS: https://www.census.gov/naics/
- SBA size standards: https://www.sba.gov/document/support-table-size-standards

## API and MCP

- REST: GET https://samgovapi.io/api/v1/naics/212311/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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