212390 — Other Nonmetallic Mineral Mining and Quarrying
Description
This industry comprises establishments primarily engaged in developing the mine site, mining, and/or milling or otherwise beneficiating (i.e., preparing) nonmetallic minerals (except coal, stone, sand, gravel, clay, and ceramic and refractory minerals). Drylake brine operations are included in this industry, as well as establishments engaged in producing the specified minerals from underground and open pit mines.
Illustrative Examples
- Barite mining and/or beneficiating
- Phosphate rock mining and/or beneficiating
- Borate, natural, mining and/or beneficiating
- Potash mining and/or beneficiating
- Peat mining and/or beneficiating
- Rock salt mining and/or beneficiating
Overview Facts
| NAICS Code | 212390 |
|---|---|
| Industry Title | Other Nonmetallic Mineral Mining and Quarrying |
| SBA Size Standard | 600 employees |
| IRS PBA Code | 212390 (exact match) |
| Sectors Hierarchy | Sector 21 → 212 → 2123 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 1474 - Potash, Soda, and Borate Minerals (via SIC1987:1474→NAICS1997:212391→2002:212391→2007:212391→2012:212391→2017:212391→2022:212390)
- SIC 1475 - Phosphate Rock (via SIC1987:1475→NAICS1997:212392→2002:212392→2007:212392→2012:212392→2017:212392→2022:212390)
- SIC 1479 - Chemical and Fertilizer Mineral Mining, NEC (via SIC1987:1479→NAICS1997:212393→2002:212393→2007:212393→2012:212393→2017:212393→2022:212390)
- SIC 1499 - Miscellaneous Nonmetallic Minerals, Except Fuels (via SIC1987:1499→NAICS1997:212399→2002:212399→2007:212399→2012:212399→2017:212399→2022:212390)
- SIC 3295 - Minerals and Earths, Ground or Otherwise Treated (via SIC1987:3295→NAICS1997:212399→2002:212399→2007:212399→2012:212399→2017:212399→2022:212390)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 212390:
- Sector 21 Directory Hub — List of related industries in the Mining, Quarrying, and Oil and Gas Extraction sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 2123
Frequently Asked Questions (FAQ)
Is 212390 a valid 2022 NAICS code?
NAICS 212390 is 'Other Nonmetallic Mineral Mining and Quarrying', a 2022 U.S. national industry under Sector 21 (Mining, Quarrying, and Oil and Gas Extraction); the SBA small-business size standard is 600 employees.
What is the SBA size standard for NAICS 212390?
The SBA small business size standard for NAICS 212390 is 600 employees (based on employees).
What is the legacy SIC code mapping for 212390?
NAICS code 212390 maps to the legacy 1987 SIC codes: 1474 - Potash, Soda, and Borate Minerals, 1475 - Phosphate Rock, 1479 - Chemical and Fertilizer Mineral Mining, NEC, 1499 - Miscellaneous Nonmetallic Minerals, Except Fuels, 3295 - Minerals and Earths, Ground or Otherwise Treated.