NAICS 2022 nationalIndustry ** USA Verified: Census NAICS 2022 · 2026-01-01

NAICS 212115 — Underground Coal Mining

Underground Coal Mining

NAICS 212115 is the national industry code for underground coal mining establishments in the United States. The Small Business Administration sets a size standard of 1,500 for this classification. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.

SBA: 1,500 View full SBA standard

Related industries in 21211 (Coal Mining)

View parent 21211

212114

Surface Coal Mining

Exclusions & Cross-References

Activities classified under other official NAICS codes:

producing coal fuel briquettes and packaged fuel (See 324190 Other petroleum and coal product manufacturing (CAN))

Official Illustrative Examples

Primary activities officially recognized by Census Bureau / Statistics Canada:

breaking, washing, grading, subbituminous coal

Complete Index of Activities (5 recognized activities) ▼

breaking, washing, grading, subbituminous coal

colliery, subbituminous coal

subbituminous coal mining

subbituminous coal preparation plant

thermal coal, subbituminous, mining

Official data

Feature	Description
Official name	North American Industry Classification System (NAICS) 2022
Issuing authority	U.S. Census Bureau with OMB, Statistics Canada, and INEGI
Tax authority	Internal Revenue Service (IRS)
Purpose	Statistical business classification and federal contracting (SAM.gov, SBA standards)
Used in	SAM.gov registration, SBA size determinations, IRS tax classification, SEC EDGAR (via SIC crosswalk)
Active since	2022 (current edition)
Hierarchy level	Sector (2-digit)
Source	https://www.census.gov/naics/