Top 100 Contractors in NAICS 21: Mining, Quarrying, and Oil and Gas Extraction, Aug 2025–Jul 2026

Name: Top 100 Contractors in NAICS 21: Mining, Quarrying, and Oil and Gas Extraction, Aug 2025–Jul 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe

The latest 12 months. See the newest fiscal year's list: Top Contractors in NAICS 21: Mining, Quarrying, and Oil and Gas Extraction, FY2025.

The top 10 won 60% of NAICS 21 contract dollars from August 2025 through July 2026

Contract obligations: $239,474,794 Net of deobligations, by contracts coded NAICS 21 or a code under it
Contractors: 358 Parent companies with an obligation
Largest contractor: Usibelli Coal Mine, Inc. $38.9 million, 15.4% of obligations
Data as of: Nov 5, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Usibelli Coal Mine, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$38,886,882	15.4%	Rank history: #3 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Promethean Operating I LLC Top agencies DOI (Department of the Interior)	$32,122,156	12.7%	Rank history: not on the FY2021–FY2023 lists, #5 in FY2024 and #2 in FY2025; up 10 since Aug 2024–Jul 2025.
3	WGL Holdings Inc. Through WGL Energy Services, Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) DOJ (Department of Justice)	$20,400,628	8.1%	Rank history: #25 in FY2021, not on the FY2022 list, #3 in FY2023, #11 in FY2024 and #5 in FY2025; up 2 since Aug 2024–Jul 2025.
4	FPA Pacific Corp. Top agencies USAF (Department of the Air Force)	$18,593,965	7.4%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; new, not ranked in Aug 2024–Jul 2025.
5	Arctic Slope Regional Corporation Through Asrc Consulting & Environmental Services, LLC Top agencies DOI (Department of the Interior)	$9,505,301	3.8%	Rank history: #1 in FY2021, #8 in FY2022, not on the FY2023–FY2024 lists and #3 in FY2025; up 154 since Aug 2024–Jul 2025.
6	Tiger Natural Gas Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) VA (Department of Veterans Affairs)	$9,000,426	3.6%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #4 in FY2025; down 4 since Aug 2024–Jul 2025.
7	Olgoonik Oilfield Services LLC Top agencies DOI (Department of the Interior)	$7,817,591	3.1%	Rank history: not on the FY2021 list, #4 in FY2022, #31 in FY2023, #2 in FY2024 and #36 in FY2025; up 15 since Aug 2024–Jul 2025.
8	Sage Energy Trading LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$5,544,589	2.2%	Rank history: not on the FY2021–FY2023 lists, #41 in FY2024 and #21 in FY2025; up 27 since Aug 2024–Jul 2025.
9	Centerpoint Energy Resources Corp. Through Nextera Energy Services Gas, LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$5,382,869	2.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
10	PCI Support Services LLC Top agencies Navy (Department of the Navy)	$5,297,710	2.1%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023, #6 in FY2024 and #18 in FY2025; down 4 since Aug 2024–Jul 2025.
11	NRG Energy, Inc. Through NRG Business Marketing LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$5,203,331	2.1%	Rank history: #26 in FY2021, #6 in FY2022, not on the FY2023–FY2024 lists and #15 in FY2025; new, not ranked in Aug 2024–Jul 2025.
12	DBR Investments Inc. Top agencies DOI (Department of the Interior)	$4,645,250	1.8%	Rank history: not on the FY2021 list, #54 in FY2022, not on the FY2023–FY2024 lists and #11 in FY2025; new, not ranked in Aug 2024–Jul 2025.
13	Ho-Chunk, Inc. Through Flatwater Professional Services Company Top agencies Army (Department of the Army)	$4,383,995	1.7%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #14 in FY2025; up 5 since Aug 2024–Jul 2025.
14	Chet Morrison Contractors LLC Top agencies DOI (Department of the Interior)	$3,522,142	1.4%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #27 in FY2025; down 3 since Aug 2024–Jul 2025.
15	American Classic Construction Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) USDA (Department of Agriculture)	$3,263,238	1.3%	Rank history: #13 in FY2021, #18 in FY2022, #17 in FY2023, #8 in FY2024 and #10 in FY2025; down 8 since Aug 2024–Jul 2025.
16	Pine Bluff Sand and Gravel Company Top agencies Army (Department of the Army)	$3,093,541	1.2%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Aug 2024–Jul 2025.
17	Crowley Holdings LLC Top agencies DOI (Department of the Interior) Army (Department of the Army) USAF (Department of the Air Force)	$3,063,321	1.2%	Rank history: #8 in FY2021, #7 in FY2022, not on the FY2023 list, #7 in FY2024 and #7 in FY2025; down 14 since Aug 2024–Jul 2025.
18	Nextera Energy Services Gas, LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$3,055,048	1.2%	Rank history: #45 in FY2021, not on the FY2022–FY2023 lists, #34 in FY2024 and not on the FY2025 list; down 10 since Aug 2024–Jul 2025.
19	Giving Tree Capital, LLC Top agencies DOI (Department of the Interior) Army (Department of the Army) USDA (Department of Agriculture)	$2,558,603	1.0%	Rank history: not on the FY2021–FY2023 lists, #28 in FY2024 and #25 in FY2025; up 7 since Aug 2024–Jul 2025.
20	Olgoonik Corporation Through Olgoonik Construction Services LLC Top agencies DOI (Department of the Interior)	$2,457,448	1.0%	Rank history: not on the FY2021–FY2023 lists, #51 in FY2024 and #12 in FY2025; new, not ranked in Aug 2024–Jul 2025.
21	Ares Strategic Mining, Inc. Top agencies DLA (Defense Logistics Agency)	$2,028,400	0.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
22	Jordan Modern Oil & Fuel Services Ltd. Co. Top agencies DOS (Department of State)	$2,012,251	0.8%	Rank history: not on the FY2021 list, #22 in FY2022, #16 in FY2023, #20 in FY2024 and #19 in FY2025; down 3 since Aug 2024–Jul 2025.
23	Transparent Energy LLC Top agencies VA (Department of Veterans Affairs)	$1,855,935	0.7%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Aug 2024–Jul 2025.
24	CF Padilla LLC Top agencies DOI (Department of the Interior)	$1,843,494	0.7%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #26 in FY2025; new, not ranked in Aug 2024–Jul 2025.
25	Skagit Aggregates LLC Top agencies Army (Department of the Army)	$1,619,944	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
26	Calista Corp Through Brice Solutions, LLC Top agencies DOI (Department of the Interior)	$1,590,562	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
27	Specialized Government Sourcing, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) DLA (Defense Logistics Agency)	$1,282,612	0.5%	Rank history: #72 in FY2021, not on the FY2022 list, #12 in FY2023, #12 in FY2024 and #20 in FY2025; down 10 since Aug 2024–Jul 2025.
28	Cobb Electric Membership Corporation 2 awardees, including Enspire Energy, LLC and Gas South, LLC Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$1,268,163	0.5%	Rank history: #86 in FY2021, #26 in FY2022, #37 in FY2023, not on the FY2024 list and #29 in FY2025; up 46 since Aug 2024–Jul 2025.
29	Willard Quarries, Inc. Top agencies Army (Department of the Army)	$1,069,827	0.4%	Rank history: #87 in FY2021, #74 in FY2022, #46 in FY2023, #27 in FY2024 and #30 in FY2025; down 6 since Aug 2024–Jul 2025.
30	Govlink LLC Top agencies DOI (Department of the Interior)	$1,038,619	0.4%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Grarok LLC Top agencies Army (Department of the Army)	$982,867	0.4%	Rank history: #48 in FY2021, #51 in FY2022, #42 in FY2023, #32 in FY2024 and #41 in FY2025; up 18 since Aug 2024–Jul 2025.
32	Boardwalk Continuum Marketing, LLC Top agencies VA (Department of Veterans Affairs)	$977,176	0.4%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and #22 in FY2025; up 19 since Aug 2024–Jul 2025.
33	Materion Corporation Through Materion Brush Inc. Top agencies NASA (National Aeronautics and Space Administration)	$967,685	0.4%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and not on the FY2025 list; down 17 since Aug 2024–Jul 2025.
34	Green Dream International LLC Top agencies USDA (Department of Agriculture) Army (Department of the Army) USAF (Department of the Air Force)	$924,036	0.4%	Rank history: #11 in FY2021, #38 in FY2022, #51 in FY2023, not on the FY2024 list and #34 in FY2025; new, not ranked in Aug 2024–Jul 2025.
35	Next Generation Logistics, LLC Top agencies Army (Department of the Army)	$919,965	0.4%	Rank history: #51 in FY2021, not on the FY2022 list, #36 in FY2023, #38 in FY2024 and #24 in FY2025; down 4 since Aug 2024–Jul 2025.
36	Nextera Energy Services Midwest, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$870,616	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
37	Bayer Construction Company, Inc. Top agencies Army (Department of the Army)	$844,667	0.3%	Rank history: #64 in FY2021, #50 in FY2022, #40 in FY2023, #37 in FY2024 and #35 in FY2025; unchanged since Aug 2024–Jul 2025.
38	Todd Marchant Top agencies DOI (Department of the Interior)	$817,193	0.3%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and not on the FY2025 list; down 2 since Aug 2024–Jul 2025.
39	Interconn Resources LLC Top agencies NASA (National Aeronautics and Space Administration)	$807,542	0.3%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; down 7 since Aug 2024–Jul 2025.
40	Rogers Brothers Land Clearing LLC Top agencies DOI (Department of the Interior)	$733,160	0.3%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; up 84 since Aug 2024–Jul 2025.
41	E2 Contracting, Inc. Top agencies DOI (Department of the Interior)	$705,910	0.3%	Rank history: #62 in FY2021, #73 in FY2022, not on the FY2023 list, #35 in FY2024 and #38 in FY2025; new, not ranked in Aug 2024–Jul 2025.
42	Mooweep LLC Top agencies DOI (Department of the Interior)	$655,661	0.3%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; up 109 since Aug 2024–Jul 2025.
43	Parliament LLC Top agencies DOI (Department of the Interior)	$627,609	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
44	Bristol Bay Native Corporation Through CCI Prime Contractors, LLC Top agencies DHS (Department of Homeland Security)	$559,144	0.2%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; new, not ranked in Aug 2024–Jul 2025.
45	Astrea Technical Services LLC Top agencies USAF (Department of the Air Force)	$533,400	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
46	Tarpan Construction, LLC Top agencies Army (Department of the Army)	$518,471	0.2%	Rank history: #52 in FY2021, #9 in FY2022, #5 in FY2023, #13 in FY2024 and #33 in FY2025; down 33 since Aug 2024–Jul 2025.
47	High Desert Pipeline, Inc. Top agencies Army (Department of the Army)	$502,523	0.2%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; down 13 since Aug 2024–Jul 2025.
48	Ecology Mir Group LLC Top agencies DOI (Department of the Interior) VA (Department of Veterans Affairs)	$467,726	0.2%	Rank history: #30 in FY2021, #84 in FY2022, #43 in FY2023, not on the FY2024 list and #50 in FY2025; new, not ranked in Aug 2024–Jul 2025.
49	Ipgs Corporation Pte. Ltd. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$457,476	0.2%	Rank history: not on the FY2021–FY2025 lists; up 76 since Aug 2024–Jul 2025.
50	Hurst-Rosche, Inc. Top agencies Army (Department of the Army)	$453,871	0.2%	Rank history: not on the FY2021 list, #69 in FY2022, #35 in FY2023, #71 in FY2024 and #93 in FY2025; up 11 since Aug 2024–Jul 2025.
51	Central Stone Co Top agencies Army (Department of the Army)	$446,250	0.2%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; down 42 since Aug 2024–Jul 2025.
52	New Enterprise Stone & Lime Co Inc. Top agencies Army (Department of the Army)	$422,716	0.2%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023, #31 in FY2024 and #76 in FY2025; new, not ranked in Aug 2024–Jul 2025.
53	Griffin's Propane, Inc. Top agencies HHS (Department of Health and Human Services)	$410,000	0.2%	Rank history: not on the FY2021 list, #56 in FY2022, #57 in FY2023, #54 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
54	Al Muamroon Trading Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$406,893	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
55	J Brothers Trucking & Excavation, LLC Top agencies USAF (Department of the Air Force)	$395,420	0.2%	Rank history: #99 in FY2021, not on the FY2022–FY2024 lists and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
56	Anson Excavating & Pipe, Inc. Top agencies USDA (Department of Agriculture)	$389,300	0.2%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Aug 2024–Jul 2025.
57	Pitlik & Wick, Inc. Top agencies USDA (Department of Agriculture)	$379,174	0.1%	Rank history: #82 in FY2021, #61 in FY2022, #83 in FY2023, #88 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
58	Sprague Operating Resources LLC Top agencies Treasury (Department of the Treasury)	$365,104	0.1%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; down 29 since Aug 2024–Jul 2025.
59	Tennessee Marble Company Top agencies National Gallery of Art	$364,907	0.1%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; up 6 since Aug 2024–Jul 2025.
60	Colorado River Indian Tribes Top agencies DOI (Department of the Interior)	$346,724	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
61	A2D Technologies, Inc. Top agencies DOI (Department of the Interior)	$341,376	0.1%	Rank history: not on the FY2021–FY2023 lists, #63 in FY2024 and #63 in FY2025; down 3 since Aug 2024–Jul 2025.
62	Fullidity LLC Top agencies DHS (Department of Homeland Security)	$337,665	0.1%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and not on the FY2025 list; down 3 since Aug 2024–Jul 2025.
63	Rimrock Ventures, LLC Top agencies DOI (Department of the Interior)	$336,311	0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; up 63 since Aug 2024–Jul 2025.
64	Kramme Construction, LLC Top agencies USDA (Department of Agriculture)	$323,600	0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Aug 2024–Jul 2025.
65	Ninja De-Icer, LLC Top agencies Army (Department of the Army)	$318,960	0.1%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; new, not ranked in Aug 2024–Jul 2025.
66	Lineport Excavating, LLC Top agencies Army (Department of the Army)	$317,981	0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023, not on the FY2024 list and #45 in FY2025; down 26 since Aug 2024–Jul 2025.
67	Double Bronze Star Marketing and Consulting, Inc. Top agencies VA (Department of Veterans Affairs)	$316,806	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
68	Aeromed Group, LLC Through Norcatec LLC Top agencies DLA (Defense Logistics Agency)	$314,382	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
69	Alpine Companies, Inc. Top agencies DOI (Department of the Interior)	$311,619	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; new, not ranked in Aug 2024–Jul 2025.
70	Kclean KG Top agencies Army (Department of the Army)	$311,220	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
71	Schuck Development Corp Top agencies USDA (Department of Agriculture)	$308,250	0.1%	Rank history: not on the FY2021 list, #42 in FY2022, not on the FY2023–FY2024 lists and #66 in FY2025; new, not ranked in Aug 2024–Jul 2025.
72	MDU Resources Group, Inc. 2 awardees, including Knife River Corporation - North Central and Knife River Corporation - Northwest Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$298,881	0.1%	Rank history: not on the FY2021–FY2024 lists and #51 in FY2025; up 3 since Aug 2024–Jul 2025.
73	FBC Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$288,852	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
74	Eagle Rock Timber, Inc. Top agencies Army (Department of the Army)	$286,175	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
75	Iron Mountain Quarry LLC Top agencies Army (Department of the Army)	$274,833	0.1%	Rank history: not on the FY2021 list, #66 in FY2022, #45 in FY2023, #60 in FY2024 and not on the FY2025 list; down 36 since Aug 2024–Jul 2025.
76	Tecship SDN BHD Top agencies Army (Department of the Army)	$266,920	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
77	Sandex Inc. Top agencies DOI (Department of the Interior)	$256,785	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
78	Rocky Mountain Aggregate & Construction, LLC Top agencies USDA (Department of Agriculture)	$249,760	0.1%	Rank history: #75 in FY2021, not on the FY2022 list, #74 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
79	Suburban Propane Partners, L.P Top agencies DOI (Department of the Interior)	$240,765	0.1%	Rank history: #60 in FY2021, #34 in FY2022, #63 in FY2023, not on the FY2024 list and #58 in FY2025; down 37 since Aug 2024–Jul 2025.
80	Robert S Murray Top agencies DOI (Department of the Interior)	$240,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
81	Gerou Excavating Inc. Top agencies USDA (Department of Agriculture)	$233,480	0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
82	Van Sloten Enterprises Inc. Top agencies Army (Department of the Army)	$230,298	0.1%	Rank history: not on the FY2021–FY2025 lists; up 27 since Aug 2024–Jul 2025.
83	U.s.a. Fanter Corporation, Ltd. Top agencies USAF (Department of the Air Force)	$228,242	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
84	Gulf Holdings, LLC Top agencies DOI (Department of the Interior)	$221,859	0.1%	Rank history: #19 in FY2021, #29 in FY2022, not on the FY2023 list, #87 in FY2024 and #55 in FY2025; down 36 since Aug 2024–Jul 2025.
85	Wood's Crushing and Hauling, Inc. Top agencies Army (Department of the Army)	$220,680	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
86	Amrize ACM PNW Inc. Top agencies Army (Department of the Army)	$216,742	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
87	Pandora Industries, LLC Top agencies Army (Department of the Army)	$209,155	0.1%	Rank history: not on the FY2021–FY2025 lists; up 105 since Aug 2024–Jul 2025.
88	Golat & Engel Custom Gravel Crushing Inc. Top agencies USDA (Department of Agriculture)	$208,872	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023, #79 in FY2024 and #78 in FY2025; down 17 since Aug 2024–Jul 2025.
89	Chitina Support Services, LLC Top agencies USAF (Department of the Air Force)	$208,121	0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; down 26 since Aug 2024–Jul 2025.
90	Rasevic Snow Services Inc. Through Snow & Ice Salt & Chemicals Unlimited, LLC Top agencies Army (Department of the Army)	$203,936	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
91	Structural Hardware and Supply, Inc. Top agencies Army (Department of the Army)	$203,120	0.1%	Rank history: #58 in FY2021, not on the FY2022 list, #39 in FY2023, #58 in FY2024 and #85 in FY2025; down 35 since Aug 2024–Jul 2025.
92	Valar Ltd Top agencies Army (Department of the Army)	$201,144	0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; up 21 since Aug 2024–Jul 2025.
93	Dennis Kirby Top agencies USDA (Department of Agriculture)	$194,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
94	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency)	$181,963	0.1%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; down 66 since Aug 2024–Jul 2025.
95	Heesong Geotek Co., Ltd. Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$179,768	0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; down 19 since Aug 2024–Jul 2025.
96	Phoenix Contracting LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$179,342	0.1%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and #84 in FY2025; down 15 since Aug 2024–Jul 2025.
97	Thompson Contracting, Inc. Top agencies Army (Department of the Army)	$166,938	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Appalachian Aggregates LLC Top agencies USDA (Department of Agriculture)	$158,442	0.1%	Rank history: not on the FY2021–FY2025 lists; up 73 since Aug 2024–Jul 2025.
99	Classic International Top agencies DOS (Department of State)	$152,582	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	Saudi Naval Support Co. Top agencies USAF (Department of the Air Force)	$150,000	0.1%	Rank history: #16 in FY2021, #62 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.

Show 75 more

100 of 358 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 21

Code	Net obligations	Largest contractor
212 Mining (except Oil and Gas)	$110,828,637	Usibelli Coal Mine, Inc.
213 Support Activities for Mining	$66,458,021	Promethean Operating I LLC
211 Oil and Gas Extraction	$62,188,135	WGL Holdings 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 $253 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Aug 2024–Jul 2025. "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.
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 21 contractors in Aug 2025–Jul 2026?

1. Usibelli Coal Mine, Inc. ($38.9M), 2. Promethean Operating I LLC ($32.1M), 3. WGL Holdings Inc. ($20.4M), 4. FPA Pacific Corp. ($18.6M), 5. Arctic Slope Regional Corporation ($9.51M), 6. Tiger Natural Gas Inc. ($9M), 7. Olgoonik Oilfield Services LLC ($7.82M), 8. Sage Energy Trading LLC ($5.54M), 9. Centerpoint Energy Resources Corp. ($5.38M), 10. PCI Support Services LLC ($5.3M).

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