21231 Stone Mining and Quarrying

Official definition

This industry comprises (1) establishments primarily engaged in developing the mine site, mining or quarrying dimension stone (i.e., rough blocks and/or slabs of stone), or mining and quarrying crushed and broken stone and/or (2) preparation plants primarily engaged in beneficiating stone (e.g., crushing, grinding, washing, screening, pulverizing, and sizing).

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:

• Producing lime are classified in Industry 32741, Lime Manufacturing.
• Quarrying and dressing dimension stone are classified in Industry 32799, All Other Nonmetallic Mineral Product Manufacturing.

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

Codes in 21231

• 212311Dimension Stone Mining and Quarrying
• 212312Crushed and Broken Limestone Mining and Quarrying
• 212313Crushed and Broken Granite Mining and Quarrying
• 212319Other Crushed and Broken Stone Mining and Quarrying