327992 — Ground or Treated Mineral and Earth Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in calcining, dead burning, or otherwise processing beyond beneficiation, clays, ceramic and refractory minerals, barite, and miscellaneous nonmetallic minerals.
Exclusions & Cross-References
- Establishments primarily engaged in crushing, grinding, pulverizing, washing, screening, sizing, or otherwise
- beneficiating mined clays, ceramics and refractory, and other miscellaneous nonmetallic minerals are classified in
- Industry Group 2123, Nonmetallic Mineral Mining and Quarrying.
Overview Facts
| NAICS Code | 327992 |
|---|---|
| Industry Title | Ground or Treated Mineral and Earth Manufacturing |
| SBA Size Standard | 600 employees |
| U.S. Establishments | 275 (Census CBP, 2023) |
| IRS PBA Code | 327900 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 327 → 3279 |
| Source / Verified | US Census 2022 NAICS Manual, Census CBP / 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 3295 - Minerals and Earths, Ground or Otherwise Treated (via SIC1987:3295→NAICS1997:327992→2002:327992→2007:327992→2012:327992→2017:327992→2022:327992)
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 J096 — Maintenance, Repair and Rebuilding of Equipment: Ores, Minerals, and Their Primary Products
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 327992:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing 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 3279
Frequently Asked Questions (FAQ)
Is 327992 a valid 2022 NAICS code?
NAICS 327992 is 'Ground or Treated Mineral and Earth Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 600 employees.
What is the SBA size standard for NAICS 327992?
The SBA small business size standard for NAICS 327992 is 600 employees (based on employees).
What is the legacy SIC code mapping for 327992?
NAICS code 327992 maps to the legacy 1987 SIC codes: 3295 - Minerals and Earths, Ground or Otherwise Treated.