| CPCool Planet Energy Systems | Camarillo | CA | — | ◇ UNVERIFIED |
| CECooper Energy Services Compressor Group | Waller | TX | — | ◇ UNVERIFIED |
| CMCore Mwd INC | Houston | TX | — | ◇ UNVERIFIED |
| CICr-crete, INC | Madera | CA | — | ◇ UNVERIFIED |
| CNCreations N' Chrome | Santa Clarita | CA | — | ◇ UNVERIFIED |
| CECreative Engineering Consultants Corporation | Little Rock | AR | — | ◇ UNVERIFIED |
| CSCrowder Supply Co LLC | Commerce City | CO | — | ◇ UNVERIFIED |
| CPCrown Parts & Machine | Billings | MT | — | ◇ UNVERIFIED |
| CICrush-it, INC. | Jonesboro | GA | — | ◇ UNVERIFIED |
| CRC&s Repair & Maintenance LLC | Victoria | TX | — | ◇ UNVERIFIED |
| C2Cummins 250kw Sn: L160132072 | Thousand Oaks | CA | — | ◇ UNVERIFIED |
| CRCummins Recon Tool | Houston | TX | — | ◇ UNVERIFIED |
| CFCzm Foundation Equipment | Ellabell | GA | — | ◇ UNVERIFIED |
| DTDan's Tank Company, INC. | Berthold | ND | — | ◇ UNVERIFIED |
| DDDash Drilling Products | Bryan | TX | — | ◇ UNVERIFIED |
| DFDavco Fab INC. | Jennings | OK | — | ◇ UNVERIFIED |
| DIDays Inn Eureka | Eureka | CA | — | ◇ UNVERIFIED |
| DMDeister Machine Company | Fort Wayne | IN | — | ◇ UNVERIFIED |
| DWDhw Well Service | Victoria | TX | — | ◇ UNVERIFIED |
| DIDixie Iron Works LTD | Alice | TX | — | ◇ UNVERIFIED |
| DCDonovan Controls LLC | Ponchatoula | LA | — | ◇ UNVERIFIED |
| DIDouble-e, INC. | Dallas | TX | — | ◇ UNVERIFIED |
| DSDownhole Stabilization INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| DTDownhole Technology | Houston | TX | — | ◇ UNVERIFIED |
| DTDownhole Technology | Houston | TX | — | ◇ UNVERIFIED |
| DWDownhole Well Solutions, LLC | Spring | TX | — | ◇ UNVERIFIED |
| DSDralco Systems, LLC | Weatherford | TX | — | ◇ UNVERIFIED |
| DEDrift Exploration Drilling | Boron | CA | — | ◇ UNVERIFIED |
| DBDrill Bit Exchange, LLC | Austin | TX | — | ◇ UNVERIFIED |
| DPDrillers Pipe Manufacturing | Cerritos | CA | — | ◇ UNVERIFIED |
| DTDrilling Tools Charleroi | Charleroi | PA | — | ◇ UNVERIFIED |
| DTDrilling Tools Charleroi | Charleroi | PA | — | ◇ UNVERIFIED |
| DTDrilling Tools International, INC. | Williston | ND | — | ◇ UNVERIFIED |
| DHDril-quip Houston Facility | Houston | TX | — | ◇ UNVERIFIED |
| DSDry Systems Technologies, INC. | Woodridge | IL | — | ◇ UNVERIFIED |
| DSD S Parts | Bluefield | VA | — | ◇ UNVERIFIED |
| DLDTP Leasing, LLC | Kilgore | TX | — | ◇ UNVERIFIED |
| DDDyna Drill Technologies | Katy | TX | — | ◇ UNVERIFIED |
| DFDynamic Finishes | Joplin | MO | — | ◇ UNVERIFIED |
| EHE&a Hauling | Oroville | CA | — | ◇ UNVERIFIED |
| EDEast Dedham Gas | Dedham | MA | — | ◇ UNVERIFIED |
| EPEastern Products CO | Turkey Creek | KY | — | ◇ UNVERIFIED |
| EEbmud | Oakland | CA | — | ◇ UNVERIFIED |
| EFEjay Family Partnership, Ltd. | Keller | TX | — | ◇ UNVERIFIED |
| ESEnerges Services, LLC | Platteville | CO | — | ◇ UNVERIFIED |
| ESEnergy Subsea LLC | Theodore | AL | — | ◇ UNVERIFIED |
| EUEnteq Upstream USA INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| EEpiroc | Harrisburg | PA | — | ◇ UNVERIFIED |
| EUEpiroc USA LLC | Roanoke | VA | — | ◇ UNVERIFIED |
| EEEsi Energy Services International, INC. | Houma | LA | — | ◇ UNVERIFIED |
| ELEuclid Land Venture , LLC C/o Reda | Ontario | CA | — | ◇ UNVERIFIED |
| EWEvi Weatherford Corporation | Rio Vista | CA | — | ◇ UNVERIFIED |
| EEExterran Engry Solutions LP | Broken Arrow | OK | — | ◇ UNVERIFIED |
| EOExxonmobil Oil CORP Harrisburg Terminal | Harrisburg | PA | — | ◇ UNVERIFIED |
| FSFairmont Supply CO | Gillette | WY | — | ◇ UNVERIFIED |
| FRFalcon Rigs, INC. | Cashion | OK | — | ◇ UNVERIFIED |
| FCFiber Composite Bethel Lane | Big Spring | TX | — | ◇ UNVERIFIED |
| FEFirst Element Fuel | Santa Clara | CA | — | ◇ UNVERIFIED |
| FPFischer Prpe Testing INC | Ellis | KS | — | ◇ UNVERIFIED |
| FAFlanders Air Seal, INC. | Rosenberg | TX | — | ◇ UNVERIFIED |
| FMFlexrig Machinery Center | Tulsa | OK | — | ◇ UNVERIFIED |
| FLFlogistix LP / Flogistix El Reno | El Reno | OK | — | ◇ UNVERIFIED |
| FVFlowcon Valve & Supply Company | Farmington | NM | — | ◇ UNVERIFIED |
| FKFlsmidth Krebs INC. | Tucson | AZ | — | ◇ UNVERIFIED |
| FRFluid Resources LLC | San Angelo | TX | — | ◇ UNVERIFIED |
| FSFluid Systems, INC. | Houston | TX | — | ◇ UNVERIFIED |
| FMF M C CORP | Fairmont | WV | — | ◇ UNVERIFIED |
| FEFmc Energy Systems | Houston | TX | — | ◇ UNVERIFIED |
| FTFmc Technologies Measurement Solutions | Bakersfield | CA | — | ◇ UNVERIFIED |
| FGFolding Gate Systems | Azusa | CA | — | ◇ UNVERIFIED |
| FEForum Energy Technologies | Bryan | TX | — | ◇ UNVERIFIED |
| FEForum Energy Technologies | Guthrie | OK | — | ◇ UNVERIFIED |
| FEForum Energy Technologies Plantersville | Plantersville | TX | — | ◇ UNVERIFIED |
| FMFraley Machine Works | Big Spring | TX | — | ◇ UNVERIFIED |
| FDFreedom Drilling Tools LLC | Houston | TX | — | ◇ UNVERIFIED |
| FIFreemyer Industrial Pressure | Fort Worth | TX | — | ◇ UNVERIFIED |
| GTGammaloy Technolgies, LLC | Houston | TX | — | ◇ UNVERIFIED |
| GCGardner-denver CO | Knoxville | TN | — | ◇ UNVERIFIED |
| GDG & D Integrated Services, INC. | Peoria | IL | — | ◇ UNVERIFIED |
| GEGeneral Electric Int'l INC - Mt Iron | Mountain Iron | MN | — | ◇ UNVERIFIED |
| GEGeneral Engineering CO | Fairmont | WV | — | ◇ UNVERIFIED |
| GMGjr Meyer Service, INC. | Corpus Christi | TX | — | ◇ UNVERIFIED |
| GAGregorio's Auto Repair | Escondido | CA | — | ◇ UNVERIFIED |
| GSGulf Sensors, INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
| GSGulfstream Services INC. | Lafayette | LA | — | ◇ UNVERIFIED |
| GMGuymons Machining and Fabrication INC | Cleveland | UT | — | ◇ UNVERIFIED |
| HEHager Equipment | Bessemer | AL | — | ◇ UNVERIFIED |
| HEHaliburton Energy Services Hermleigh | Hermleigh | TX | — | ◇ UNVERIFIED |
| HCHalliburton Casing Manufacturing Center of Excelle | Houston | TX | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services | Dallas | TX | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services - Carrollton Mfg & Technology | Carrollton | TX | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services Carrollton Plant | Carrollton | TX | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services INC Security Dbs | Houston | TX | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services North Belt Facility | Houston | TX | — | ◇ UNVERIFIED |
| HSHanover Smith INC | Alleyton | TX | — | ◇ UNVERIFIED |
| HCHarnischfeger Corporation: in | Casper | WY | — | ◇ UNVERIFIED |
| HPHarvest Petroleum INC | Fortuna | CA | — | ◇ UNVERIFIED |
| HIHawk Ind INC | Signal Hill | CA | — | ◇ UNVERIFIED |
| HIHawkins Investment Solutions, LLC | Tucson | AZ | — | ◇ UNVERIFIED |
| HTHDD Technology, LLC | Flower Mound | TX | — | ◇ UNVERIFIED |