Top 100 Contractors in NAICS 21311: Support Activities for Mining, FY2025

Name: Top 100 Contractors in NAICS 21311: Support Activities for Mining, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 82% of FY2025 NAICS 21311 contract dollars

Contract obligations: $42,901,607 Net of deobligations, by contracts coded NAICS 21311 or a code under it
Contractors: 188 Parent companies with an obligation
Largest contractor: Promethean Operating I LLC $14.9 million, 30.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Promethean Operating I LLC Top agencies DOI (Department of the Interior)	$14,866,119	30.0%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; up 2 since FY2024.
2	Arctic Slope Regional Corporation 2 awardees, including Asrc Consulting & Environmental Services, LLC and Asrc Federal Facilities Logistics, LLC Top agencies DOI (Department of the Interior) DLA (Defense Logistics Agency)	$13,096,348	26.5%	Rank history: #1 in FY2021, #4 in FY2022, not on the FY2023 list and #33 in FY2024; up 31 since FY2024.
3	Olgoonik Construction Services LLC Top agencies DOI (Department of the Interior)	$4,010,198	8.1%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2024; up 3 since FY2024.
4	Hydrocarbon Well Services, Inc. Top agencies DOI (Department of the Interior)	$2,650,559	5.4%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and not on the FY2024 list; returned.
5	Jordan Modern Oil & Fuel Services Ltd. Co. Top agencies DOS (Department of State)	$2,098,586	4.2%	Rank history: not on the FY2021 list, #8 in FY2022, #3 in FY2023 and #5 in FY2024; unchanged since FY2024.
6	Chet Morrison Contractors LLC Top agencies DOI (Department of the Interior)	$973,136	2.0%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2024; down 2 since FY2024.
7	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency)	$958,251	1.9%	Rank history: not on the FY2021 list, #33 in FY2022, #20 in FY2023 and #31 in FY2024; up 24 since FY2024.
8	Olgoonik Oilfield Services LLC Top agencies DOI (Department of the Interior)	$788,843	1.6%	Rank history: not on the FY2021 list, #3 in FY2022, #7 in FY2023 and #1 in FY2024; down 7 since FY2024.
9	E2 Contracting, Inc. Top agencies DOI (Department of the Interior)	$705,910	1.4%	Rank history: #14 in FY2021, #19 in FY2022, #55 in FY2023 and #8 in FY2024; down 1 since FY2024.
10	CCI Prime Contractors, LLC Top agencies DHS (Department of Homeland Security)	$559,144	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
11	Astrea Technical Services LLC Top agencies USAF (Department of the Air Force)	$533,400	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
12	C & C Metals Engineering Inc. Top agencies DLA (Defense Logistics Agency)	$434,364	0.9%	Rank history: #26 in FY2021, not on the FY2022 list, #58 in FY2023 and #49 in FY2024; up 37 since FY2024.
13	Ordnance Technology Service, Inc. Top agencies DLA (Defense Logistics Agency)	$343,784	0.7%	Rank history: #38 in FY2021, #66 in FY2022, #85 in FY2023 and #57 in FY2024; up 44 since FY2024.
14	TGS-Nopec Geophysical Company Through A2D Technologies, Inc. Top agencies DOI (Department of the Interior)	$325,103	0.7%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2024; unchanged since FY2024.
15	Bluewater Energy Services, LLC Top agencies DOI (Department of the Interior)	$293,132	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
16	Sebang Oil Corporation Top agencies Army (Department of the Army)	$286,816	0.6%	Rank history: not on the FY2021 list, #16 in FY2022, #12 in FY2023 and #17 in FY2024; up 1 since FY2024.
17	Heesong Geotek Co., Ltd. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$233,360	0.5%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2024; up 7 since FY2024.
18	Mechatronics, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$219,524	0.4%	Rank history: #68 in FY2021, #32 in FY2022, #28 in FY2023 and #22 in FY2024; up 4 since FY2024.
19	Acty Co., Ltd. Top agencies Navy (Department of the Navy)	$199,249	0.4%	Rank history: #15 in FY2021, #20 in FY2022, #16 in FY2023 and #20 in FY2024; up 1 since FY2024.
20	Advanced CNC Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$161,590	0.3%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2023 and #30 in FY2024; up 10 since FY2024.
21	Phoenix Contracting LLC Top agencies Navy (Department of the Navy)	$142,238	0.3%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; up 2 since FY2024.
22	Hurst-Rosche, Inc. Top agencies Army (Department of the Army)	$138,704	0.3%	Rank history: not on the FY2021 list, #18 in FY2022, #9 in FY2023 and #18 in FY2024; down 4 since FY2024.
23	Signa Engineering Corp. Top agencies Treasury (Department of the Treasury)	$137,373	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
24	North Wind Site Services LLC Top agencies DOI (Department of the Interior)	$128,982	0.3%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2024; down 17 since FY2024.
25	Spees-Hernandez JV LLC Through Spees LLC Top agencies VA (Department of Veterans Affairs)	$116,985	0.2%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and #28 in FY2024; up 3 since FY2024.
26	Jbl.-Prs. JV LLC Top agencies VA (Department of Veterans Affairs)	$100,083	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
27	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$87,210	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
28	Pluxee Pay Brasil LTDA Top agencies DOS (Department of State)	$72,729	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
29	Enverus, Inc. Top agencies DOI (Department of the Interior)	$71,532	0.1%	Rank history: #8 in FY2021, not on the FY2022 list, #30 in FY2023 and #56 in FY2024; up 27 since FY2024.
30	Petroleum Equipment, Inc. Top agencies VA (Department of Veterans Affairs)	$66,750	0.1%	Rank history: #94 in FY2021, #63 in FY2022, #86 in FY2023 and #70 in FY2024; up 40 since FY2024.
31	Homewood Sales Corporation Top agencies DLA (Defense Logistics Agency)	$62,631	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
32	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency)	$59,784	0.1%	Rank history: not on the FY2021 list, #85 in FY2022, #46 in FY2023 and #54 in FY2024; up 22 since FY2024.
33	Petroleum Recovery Services LLC Top agencies VA (Department of Veterans Affairs)	$58,512	0.1%	Rank history: #49 in FY2021, #43 in FY2022, #32 in FY2023 and #35 in FY2024; up 2 since FY2024.
34	General Dynamics Corporation 3 awardees, including General Dynamics-Ots, Inc., Electric Boat Corporation and General Dynamics European Land Systems-Bridge Systems GMBH Top agencies DLA (Defense Logistics Agency)	$55,298	0.1%	Rank history: #34 in FY2021, #25 in FY2022, #43 in FY2023 and #74 in FY2024; up 40 since FY2024.
35	Inversiones Chevron, Limitada De Capital Variable Top agencies DOS (Department of State)	$54,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
36	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$47,157	0.1%	Rank history: #83 in FY2021, #78 in FY2022, #60 in FY2023 and not on the FY2024 list; up 68 since FY2024.
37	Seldovia Fuel and Lube, Inc. Top agencies Commerce (Department of Commerce)	$47,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and #44 in FY2024; up 7 since FY2024.
38	Veterans Technical Services, LLC Top agencies DLA (Defense Logistics Agency)	$45,928	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
39	Fluid Solutions LLC Top agencies DOS (Department of State)	$45,727	0.1%	Rank history: #37 in FY2021, #64 in FY2022, #36 in FY2023 and #79 in FY2024; up 40 since FY2024.
40	Spaires Inc Top agencies DLA (Defense Logistics Agency)	$39,353	0.1%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2024; up 5 since FY2024.
41	Chand, L.L.C. Top agencies DLA (Defense Logistics Agency)	$37,830	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
42	Brown Helicopter, Inc. Top agencies DLA (Defense Logistics Agency)	$35,931	0.1%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2024; up 35 since FY2024.
43	Preci-Manufacturing, Incorporated Top agencies DLA (Defense Logistics Agency)	$35,540	0.1%	Rank history: not on the FY2021–FY2024 lists; up 105 since FY2024.
44	Spring Fountain Studios LLC Top agencies DOI (Department of the Interior)	$35,496	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
45	Norcatec LLC Top agencies DLA (Defense Logistics Agency)	$35,404	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
46	Tibsus Supply Inc. Top agencies DLA (Defense Logistics Agency)	$34,968	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
47	PB Hoidale Co Inc. Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$34,378	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
48	SAFRAN Through Safran Landing Systems Top agencies DLA (Defense Logistics Agency)	$32,858	0.1%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2023 and #34 in FY2024; down 14 since FY2024.
49	Code Steel Industrial Inspections LLC Top agencies USAF (Department of the Air Force)	$31,871	0.1%	Rank history: not on the FY2021 list, #46 in FY2022, not on the FY2023 list and #60 in FY2024; up 11 since FY2024.
50	RIX Industries Top agencies DLA (Defense Logistics Agency)	$31,753	0.1%	Rank history: #43 in FY2021, #62 in FY2022, #74 in FY2023 and #39 in FY2024; down 11 since FY2024.
51	Brandamar, Inc. Top agencies DLA (Defense Logistics Agency)	$31,673	0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and #76 in FY2024; up 25 since FY2024.
52	Ameritech Die & Mold South, Inc. Top agencies DLA (Defense Logistics Agency)	$28,892	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
53	Immobilaire Inc. Top agencies DLA (Defense Logistics Agency)	$27,540	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
54	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$27,528	0.1%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2024; down 7 since FY2024.
55	2Lyons Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$26,404	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
56	Penn Keystone Coal Co LLC Top agencies DOI (Department of the Interior)	$26,243	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
57	Tidewater, Inc. Top agencies DOS (Department of State)	$25,763	0.1%	Rank history: #75 in FY2021, not on the FY2022–FY2023 lists and #66 in FY2024; up 9 since FY2024.
58	Aircraft Inventory Management and Services, Ltd. Top agencies DLA (Defense Logistics Agency)	$25,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
59	Moog Inc. Top agencies DLA (Defense Logistics Agency)	$24,529	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
60	Clarke Power Services Inc. Top agencies DLA (Defense Logistics Agency)	$22,672	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
61	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$21,576	<0.1%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and not on the FY2024 list; returned.
62	Global Logistics Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$21,303	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
63	W.p.e., Inc. Top agencies DLA (Defense Logistics Agency)	$19,579	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
64	Cherokee Federal Solutions, L.L.C. Top agencies DOT (Department of Transportation)	$19,340	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
65	TNN Machining Company, L.L.C. Top agencies DLA (Defense Logistics Agency)	$18,450	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
66	Central Power Systems & Services, LLC Top agencies DLA (Defense Logistics Agency)	$17,717	<0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; down 8 since FY2024.
67	Krobach Mfg. Corp. Top agencies DLA (Defense Logistics Agency)	$17,391	<0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and #88 in FY2024; up 21 since FY2024.
68	EEC Environmental Top agencies Navy (Department of the Navy)	$17,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
69	Petro West Inc. Top agencies DOI (Department of the Interior)	$16,978	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
70	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$15,774	<0.1%	Rank history: #24 in FY2021 and not on the FY2022–FY2024 lists; up 36 since FY2024.
71	Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$15,549	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
72	Kerr United Group LLC Top agencies DOI (Department of the Interior)	$15,512	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
73	Kechann Contracting, LLC Top agencies USAF (Department of the Air Force)	$15,322	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
74	Leonardo S.p.A. Through Engineered Coil Company Top agencies DLA (Defense Logistics Agency)	$15,250	<0.1%	Rank history: not on the FY2021 list, #40 in FY2022 and not on the FY2023–FY2024 lists; returned.
75	The Boeing Company 2 awardees, including Boeing Distribution Services X, Inc. and Boeing Distribution Services, Inc. Top agencies DLA (Defense Logistics Agency)	$14,900	<0.1%	Rank history: not on the FY2021 list, #57 in FY2022, #71 in FY2023 and not on the FY2024 list; returned.
76	Zirchron LLC Top agencies DOI (Department of the Interior)	$14,825	<0.1%	Rank history: #51 in FY2021 and not on the FY2022–FY2024 lists; up 50 since FY2024.
77	Johnson & Towers LLC Top agencies DLA (Defense Logistics Agency)	$14,197	<0.1%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2024; down 40 since FY2024.
78	Negocios Globales De Centroamerica SA De CV Top agencies DOS (Department of State)	$13,860	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
79	Mass Tank Inspection Services LLC Top agencies Army (Department of the Army)	$13,025	<0.1%	Rank history: #61 in FY2021, #79 in FY2022, #78 in FY2023 and not on the FY2024 list; up 44 since FY2024.
80	Tawreek Dimensions Establishment (Tde) Top agencies DOS (Department of State)	$12,696	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
81	Telemetry & Process Controls Inc. Top agencies USAF (Department of the Air Force)	$11,667	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
82	Basic Rubber and Plastics Co. Top agencies DLA (Defense Logistics Agency)	$11,639	<0.1%	Rank history: not on the FY2021 list, #84 in FY2022, #91 in FY2023 and not on the FY2024 list; up 62 since FY2024.
83	DC Precision LLC Top agencies DLA (Defense Logistics Agency)	$11,364	<0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2024; down 14 since FY2024.
84	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$10,706	<0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and not on the FY2024 list; up 87 since FY2024.
85	Secure Components, LLC Top agencies DLA (Defense Logistics Agency)	$10,640	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
86	Aviation Ground Equipment Corp Top agencies DLA (Defense Logistics Agency)	$10,171	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 66 since FY2024.
87	IBP Consulting, Inc. Top agencies DLA (Defense Logistics Agency)	$9,900	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
88	MXM Logistics LLC Top agencies DLA (Defense Logistics Agency)	$9,725	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	Qline Products Corp Top agencies DLA (Defense Logistics Agency)	$9,437	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 21 since FY2024.
90	Intercontinental Bearing Supply Company Inc. Top agencies DLA (Defense Logistics Agency)	$9,241	<0.1%	Rank history: not on the FY2021–FY2023 lists and #99 in FY2024; up 9 since FY2024.
91	Trivent Engineering, Incorporated Top agencies DLA (Defense Logistics Agency)	$9,093	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
92	Alamo Aircraft, Ltd. Top agencies DLA (Defense Logistics Agency)	$8,825	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 83 since FY2024.
93	Bright Lights Usa, Inc. Top agencies DLA (Defense Logistics Agency)	$8,640	<0.1%	Rank history: not on the FY2021–FY2023 lists and #91 in FY2024; down 2 since FY2024.
94	Bella MIA Donna LLC Top agencies DLA (Defense Logistics Agency)	$8,446	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
95	DBR Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$8,191	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
96	Etek Tool & Manufacturing LLC Top agencies DLA (Defense Logistics Agency)	$7,892	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Optimal Tank Solutions LLC Top agencies DOJ (Department of Justice)	$7,850	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
98	WFM Manufacturing & Supply Inc. Top agencies DLA (Defense Logistics Agency)	$7,740	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 9 since FY2024.
99	Leak Detection Service Inc. Top agencies USAF (Department of the Air Force)	$7,500	<0.1%	Rank history: not on the FY2021 list, #93 in FY2022, #98 in FY2023 and not on the FY2024 list; returned.
100	Freehold Manufacturing Assembly Company, Inc. Top agencies DLA (Defense Logistics Agency)	$7,470	<0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023 and #78 in FY2024; down 22 since FY2024.

Show 75 more

100 of 188 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 21311

Code	Net obligations	Largest contractor
213112 Support Activities for Oil and Gas Operations	$38,968,079	Promethean Operating I LLC
213113 Support Activities for Coal Mining	$3,538,759	ECI Defense Group, Inc.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $49.5 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2024. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2024 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 21311 contractors in FY2025?

1. Promethean Operating I LLC ($14.9M), 2. Arctic Slope Regional Corporation ($13.1M), 3. Olgoonik Construction Services LLC ($4.01M), 4. Hydrocarbon Well Services, Inc. ($2.65M), 5. Jordan Modern Oil & Fuel Services Ltd. Co. ($2.1M), 6. Chet Morrison Contractors LLC ($973K), 7. ECI Defense Group, Inc. ($958K), 8. Olgoonik Oilfield Services LLC ($789K), 9. E2 Contracting, Inc. ($706K), 10. CCI Prime Contractors, LLC ($559K).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login