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 (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Overview Facts
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)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 3820 — Mining, Rock Drilling, Earth Boring, and Related Equipment
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 212115 valid in 2022? ▾
Yes, 212115 is a valid 6-digit 2022 NAICS national industry code representing 'Underground Coal Mining' under Sector 21 in the official classification index.
What is the SBA size standard for NAICS code 212115? ▾
The Small Business Administration (SBA) has established a small business size standard of 1,500 employees for NAICS code 212115 (Underground Coal Mining), calculated based on employees.
What is the legacy SIC equivalent for NAICS 212115? ▾
According to official Census Bureau concordance tables, NAICS code 212115 (Underground Coal Mining) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 1222 - Bituminous Coal Underground Mining, 1231 - Anthracite Mining.
Related Pages & Tools
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.
- NAICS 212115 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Underground Coal Mining).
- 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.