NAICS 333131: Mining Machinery and Equipment Manufacturing
National industry
SBA small business size standard: 900 employees
Code facts
- Part of
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31-33
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333
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3331
- 33313
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3331
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333
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31-33
- Contract awards
- 20 In the last 12 months
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $907,779 |
| FY2025 | -$37,102 |
| FY2024 | $1,966,209 |
| FY2023 | $2,978,118 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Sepor, Inc. | $295,070 | |
| 2 | Arhab LLC | $275,000 | |
| 3 | Geotechnical Consulting & Testing Systems, L.L.C. | $76,835 | |
| 4 | Dejana Truck & Utility Equipment Co, LLC | $66,720 | |
| 5 | Golden Lines Contracting Company | $58,400 | |
| 6 | Purper GMBH | $34,664 | |
| 7 | Inflatable Packers International, LLC | $29,705 | |
| 8 | Bayfront Metal Products LLC | $29,640 | |
| 9 | Quintessential Management, LLC | $25,983 | |
| 10 | Larkos Packing And Distribution Inc. | $17,852 |
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $378,008 | |
| 2 | Department of Energy | $295,070 | |
| 3 | Defense Logistics Agency | $119,481 | |
| 4 | Department of Health and Human Services | $106,540 | |
| 5 | Department of the Navy | $8,680 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 3417 Milling Machines | $295,070 | |
| 2 | 3895 Miscellaneous Construction Equipment | $275,000 | |
| 3 | 3820 Mining, Rock Drilling, Earth Boring, and Related Equipment | $224,661 | |
| 4 | 6640 Laboratory Equipment and Supplies | $76,835 | |
| 5 | 3805 Earth Moving and Excavating Equipment | $34,664 | |
| 6 | 4710 Pipe, Tube and Rigid Tubing | $8,909 | |
| 7 | 5120 Hand Tools, Nonedged, Nonpowered | $8,680 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Oregon | $295,070 | |
| 2 | Connecticut | $275,000 | |
| 3 | Arizona | $76,835 | |
| 4 | New York | $66,720 | |
| 5 | Pennsylvania | $49,721 | |
| 6 | Georgia | $32,891 | |
| 7 | Michigan | $29,640 | |
| 8 | California | $13,913 | |
| 9 | Virginia | $8,680 | |
| 10 | Indiana | $172 | |
| 11 | Kentucky | $45 |
Show all 11
Shares are of everything obligated under NAICS 333131 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 345 listed here. See the rest on GovTribe.
Definition
This U.S. industry comprises establishments primarily engaged in (1) manufacturing underground mining machinery and equipment, such as coal breakers, mining cars, core drills, coal cutters, and rock drills, and (2) manufacturing mineral beneficiating machinery and equipment used in surface or underground mines.
Illustrative examples
- Amalgamators (i.e., metallurgical and mining machinery) manufacturing
- Augers, mining-type, manufacturing
- Bits, rock drill, underground mining-type, manufacturing
- Breakers, coal, manufacturing
- Cars, mining, manufacturing
- Cleaning machinery, mining-type, manufacturing
- Coal breakers, cutters, and pulverizers manufacturing
- Concentration machinery, mining-type, manufacturing
- Core drills, underground mining-type, manufacturing
- Crushing machinery, stationary, manufacturing
- Cutters, coal, manufacturing
- Drilling equipment, underground mining-type, manufacturing
- Drills, core, underground mining-type, manufacturing
- Drills, rock, underground mining-type, manufacturing
- Dumpers, mining car, manufacturing
- Feeders, mineral beneficiating-type, manufacturing
- Flotation machinery, mining-type, manufacturing
- Hammer mill machinery (i.e., rock and ore crushing machines), stationary, manufacturing
- Loading machines, underground mining, manufacturing
- Mineral processing and beneficiating machinery manufacturing
- Mining cars manufacturing
- Ore crushing, washing, screening, and loading machinery manufacturing
- Pellet mills machinery, mining-type, manufacturing
- Quarrying machinery and equipment manufacturing
- Rock crushing machinery, stationary, manufacturing
- Rock drills, underground mining-type, manufacturing
- Scraper loaders, underground mining-type, manufacturing
- Screening machinery, stationary, manufacturing
- Sedimentary mineral machinery manufacturing
- Sieves and screening equipment, mineral beneficiating, manufacturing
- Stone beneficiating machinery manufacturing
- Underground mining machinery manufacturing
- Washers, aggregate and sand, stationary, manufacturing
Show all 33
Quick answers
What is NAICS 333131?
NAICS 333131 is Mining Machinery and Equipment Manufacturing, a national industry in NAICS 31-33, Manufacturing.
What is the NAICS code for mining cars manufacturing?
The NAICS code for mining cars manufacturing is 333131, Mining Machinery and Equipment Manufacturing.
What is the NAICS code for underground mining machinery manufacturing?
The NAICS code for underground mining machinery manufacturing is 333131, Mining Machinery and Equipment Manufacturing.
What is the NAICS code for sedimentary mineral machinery manufacturing?
The NAICS code for sedimentary mineral machinery manufacturing is 333131, Mining Machinery and Equipment Manufacturing.
How much do federal agencies spend under NAICS 333131?
Federal contracts under NAICS 333131 obligated $5,815,004 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 333131?
The contractors with the most obligated under NAICS 333131 in fiscal years 2026 and 2027 are Sepor, Inc. ($295,070); Arhab LLC ($275,000); and Geotechnical Consulting & Testing Systems, L.L.C. ($76,835).
Which agencies buy the most under NAICS 333131?
The agencies that obligated the most under NAICS 333131 in fiscal years 2026 and 2027 are Department of the Army ($378,008), Department of Energy ($295,070) and Defense Logistics Agency ($119,481).
Which PSC codes are used with NAICS 333131?
The PSC codes with the most obligated under NAICS 333131 in fiscal years 2026 and 2027 are 3417 Milling Machines; 3895 Miscellaneous Construction Equipment; and 3820 Mining, Rock Drilling, Earth Boring, and Related Equipment.
Where is the work under NAICS 333131 performed?
By place of performance, the states with the most contract obligations under NAICS 333131 over the last 12 months are Oregon ($295,070), Connecticut ($275,000) and Arizona ($76,835).
What is the latest contract opportunity under NAICS 333131?
The latest contract opportunity under NAICS 333131 is TSB25 - FY26 JTF-SB HQ Drill Rig Purchase W569QE26QA009 0001, solicitation from Department of the Army, posted September 18, 2026.
On GovTribe
See everything under NAICS 333131
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
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