NAICS Code 21231 — Stone Mining and Quarrying

NAICS Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It contains 4 direct sub-codes.

Code	21231
Title	Stone Mining and Quarrying
Level	NAICS Industry (5-digit)
Edition	NAICS 2022 edition

Official definition (2022 NAICS)

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).

Where 21231 sits in the hierarchy

Level	Code	Title
Sector	21	Mining, Quarrying, and Oil and Gas Extraction
Subsector	212	Mining (except Oil and Gas)
Industry Group	2123	Nonmetallic Mineral Mining and Quarrying
NAICS Industry	21231	Stone Mining and Quarrying

Codes under 21231

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

Related NAICS Industry codes

• 21232 — Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying
• 21239 — Other Nonmetallic Mineral Mining and Quarrying

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.