NAICS 21311: Support Activities for Mining
NAICS industry
Code facts
- Part of
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21
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213
- 2131
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213
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21
- Codes under it
- 5
- Contract awards
- 238 In the last 12 months
- Contract obligations
- $42,901,607 In FY2025
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 | $72,728,066 |
| FY2025 | $42,901,607 |
| FY2024 | $78,337,596 |
| FY2023 | $8,486,385 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Promethean Operating I LLC | $28,341,556 | |
| 2 | Olgoonik Oilfield Services, LLC | $23,226,012 | |
| 3 | Chet Morrison Contractors LLC | $7,405,331 | |
| 4 | Parliament LLC | $2,537,990 | |
| 5 | North Wind Site Services LLC | $2,171,514 | |
| 6 | Brice Solutions, LLC | $1,792,498 | |
| 7 | Jordan Modern Oil & Fuel Services LTD. CO. | $1,745,024 | |
| 8 | Hydrocarbon Well Services, Inc. | $723,464 | |
| 9 | Hurst-Rosche, Inc. | $384,596 | |
| 10 | A2D Technologies, Inc. | $341,376 |
See the full FY2025 ranking of NAICS 21311 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Interior | $67,245,533 | |
| 2 | Defense Logistics Agency | $2,012,020 | |
| 3 | Department of State | $1,997,043 | |
| 4 | Department of the Army | $830,496 | |
| 5 | Department of Homeland Security | $241,984 | |
| 6 | Department of Veterans Affairs | $159,551 | |
| 7 | Department of the Navy | $86,000 | |
| 8 | Air Force | $60,219 | |
| 9 | Office of the Secretary of Defense | $51,262 | |
| 10 | Department of Commerce | $48,000 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | F108 Hazardous Substance Removal, Cleanup, and Disposal Services and Operational Support | $38,284,877 | |
| 2 | Z2QA Repair or Alteration of Restoration of Real Property (Public or Private) | $27,663,582 | |
| 3 | 9140 Fuel Oils | $1,888,706 | |
| 4 | Z2NE Repair or Alteration of Water Supply Facilities | $790,000 | |
| 5 | 3110 Bearings, Antifriction, Unmounted | $750,790 | |
| 6 | Z1NA Maintenance of Fuel Supply Facilities | $446,246 | |
| 7 |
F015 Well Drilling/ |
$384,596 | |
| 8 | 3120 Bearings, Plain, Unmounted | $383,670 | |
| 9 | B529 Scientific Data Studies | $341,376 | |
| 10 | J029 Maintenance, Repair and Rebuilding of Equipment: Engine Accessories | $311,220 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Louisiana | $37,713,253 | |
| 2 | Alaska | $24,341,842 | |
| 3 | Wyoming | $1,674,990 | |
| 4 | Montana | $957,405 | |
| 5 | Colorado | $824,817 | |
| 6 | Ohio | $770,159 | |
| 7 | West Virginia | $723,464 | |
| 8 | Texas | $592,297 | |
| 9 | District of Columbia | $331,429 | |
| 10 | Missouri | $307,638 | |
| 11 | Arizona | $288,878 | |
| 12 | Georgia | $257,165 | |
| 13 | California | $199,258 | |
| 14 | New York | $139,999 | |
| 15 | Pennsylvania | $122,241 | |
| 16 | Florida | $111,677 | |
| 17 | Washington | $87,876 | |
| 18 | Guam | $86,000 | |
| 19 | Illinois | $83,113 | |
| 20 | Virginia | $77,143 | |
| 21 | Michigan | $65,850 | |
| 22 | Wisconsin | $58,990 | |
| 23 | Kansas | $39,070 | |
| 24 | Kentucky | $28,952 | |
| 25 | Maryland | $20,306 | |
| 26 | Alabama | $20,148 | |
| 27 | Massachusetts | $18,966 | |
| 28 | Indiana | $15,689 | |
| 29 | Oklahoma | $12,451 | |
| 30 | Nebraska | $9,924 | |
| 31 | North Carolina | $1,705 | |
| 32 | Minnesota | $510 | |
| 33 | Vermont | $350 |
Show all 33
Shares are of everything obligated under NAICS 21311 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 39 more
Latest 49 of 1,499 listed here. See the rest on GovTribe.
Codes under 21311
| NAICS code | Size standard |
|---|---|
| 213111 Drilling Oil and Gas Wells | 1,000 employees |
| 213112 Support Activities for Oil and Gas Operations | $47 million in average annual receipts |
| 213113 Support Activities for Coal Mining | $27.5 million in average annual receipts |
| 213114 Support Activities for Metal Mining | $41 million in average annual receipts |
| 213115 Support Activities for Nonmetallic Minerals (except Fuels) Mining | $20.5 million in average annual receipts |
Definition
This industry comprises establishments primarily engaged in providing support services, on a contract or fee basis (except geophysical surveying and mapping, mine site preparation, construction, and transportation activities), required for the mining and quarrying of minerals and for the extraction of oil and gas. Drilling, taking core samples, and making geological observations at prospective sites for minerals, on a contract or fee basis, are included in this industry.
Quick answers
What is NAICS 21311?
NAICS 21311 is Support Activities for Mining, a NAICS industry in NAICS 21, Mining, Quarrying, and Oil and Gas Extraction.
What codes are under NAICS 21311?
NAICS 21311 has 5 codes under it with their own GovTribe pages, including 213111 Drilling Oil and Gas Wells, 213112 Support Activities for Oil and Gas Operations and 213113 Support Activities for Coal Mining.
How much do federal agencies spend under NAICS 21311?
Federal contracts under NAICS 21311 obligated $42,901,607 in fiscal year 2025 and $202,453,654 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 21311?
The contractors with the most obligated under NAICS 21311 in fiscal years 2026 and 2027 are Promethean Operating I LLC ($28,341,556); Olgoonik Oilfield Services, LLC ($23,226,012); and Chet Morrison Contractors LLC ($7,405,331).
Which agencies buy the most under NAICS 21311?
The agencies that obligated the most under NAICS 21311 in fiscal years 2026 and 2027 are Department of the Interior ($67,245,533), Defense Logistics Agency ($2,012,020) and Department of State ($1,997,043).
Which PSC codes are used with NAICS 21311?
The PSC codes with the most obligated under NAICS 21311 in fiscal years 2026 and 2027 are F108 Hazardous Substance Removal, Cleanup, and Disposal Services and Operational Support; Z2QA Repair or Alteration of Restoration of Real Property (Public or Private); and 9140 Fuel Oils.
Where is the work under NAICS 21311 performed?
By place of performance, the states with the most contract obligations under NAICS 21311 over the last 12 months are Louisiana ($37,713,253), Alaska ($24,341,842) and Wyoming ($1,674,990).
What is the latest contract opportunity under NAICS 21311?
The latest contract opportunity under NAICS 21311 is Clamp, edge, mating, solicitation from Construction and Equipment (DLA), posted October 20, 2026.
On GovTribe
See everything under NAICS 21311
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
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- Ask GovTribe AI about this code