212115 — Underground Coal Mining
Description
This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) underground mining of bituminous and anthracite coal; (2) developing bituminous and anthracite coal underground mine sites; and (3) underground mining and beneficiating (e.g., cleaning, washing, screening, and sizing) of bituminous and anthracite coal.
Overview Facts
| NAICS Code | 212115 |
|---|---|
| Industry Title | Underground Coal Mining |
| SBA Size Standard | 1,500 employees |
| IRS PBA Code | 212110 (rolled-up match) |
| Sectors Hierarchy | Sector 21 → 212 → 2121 |
| 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 1222 - Bituminous Coal Underground Mining (via SIC1987:1222→NAICS1997:212112→2002:212112→2007:212112→2012:212112→2017:212112→2022:212115)
- SIC 1231 - Anthracite Mining (via SIC1987:1231→NAICS1997:212113→2002:212113→2007:212113→2012:212113→2017:212113→2022:212115)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 212115:
- 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 2121
Frequently Asked Questions (FAQ)
Is 212115 a valid 2022 NAICS code?
NAICS 212115 is 'Underground Coal Mining', a 2022 U.S. national industry under Sector 21 (Mining, Quarrying, and Oil and Gas Extraction); the SBA small-business size standard is 1,500 employees.
What is the SBA size standard for NAICS 212115?
The SBA small business size standard for NAICS 212115 is 1,500 employees (based on employees).
What is the legacy SIC code mapping for 212115?
NAICS code 212115 maps to the legacy 1987 SIC codes: 1222 - Bituminous Coal Underground Mining, 1231 - Anthracite Mining.