| BHBaker Hughes Emmott Road Plant | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| DIDril-quip INC | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| GHGe Hydril | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| NONational Oilwell | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| RAReslink a Division of Schlumberger Technology | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| VSVarco Shaffer Facility | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| SESamco Enterprises | Houston | TX | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
 Advanced Containment Systems | Houston | TX | Machinery Manufacturing333998 | — | ◇ UNVERIFIED |
| ACAshbrook CORP | Houston | TX | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| BTBell Trucks America INC. | Houston | TX | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| CGCaterpillar Global Mining Amer Llc/houston | Houston | PA | Machinery Manufacturing333131 | — | ◇ UNVERIFIED |
| CXCdab Xii | Houston | TX | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| DRDerichebourg Recycling USA | Houston | TX | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| DPDover Precision Components | Houston | TX | Machinery Manufacturing333613 | — | ◇ UNVERIFIED |
| DTDownhole Technology | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| FEFmc Energy Systems | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| FEForsyth Eng. & Machine CORP | Houston | TX | Machinery Manufacturing333318 | — | ◇ UNVERIFIED |
| GHG & H Diversified Manufacturing | Houston | TX | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| GMGoodman Mfg. CO. L.p. | Houston | TX | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| HCHalliburton Casing Manufacturing Center of Excelle | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services INC Security Dbs | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services North Belt Facility | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| HCHarry Cameron Technology Center | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| HMHughes M.p.d. | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| IDInnovex Downhole Solutions | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| MMerichem | Houston | TX | Machinery Manufacturing333298 | — | ◇ UNVERIFIED |
| MHMetals House INC | Houston | TX | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| NFNhr Facility | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| OSOil States Industries | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
 Oil States Industries, INC. - Mmc | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| RHReed Hycalog LP | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| RSRelevant Solutions | Houston | TX | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| S3Stage 3 Separation | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| TGTechnipfmc Gremp Campus | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| TEThe Exone | Houston | TX | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| THTps Houston Group | Houston | TX | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| VWVeolia Water North America Operating Services | Houston | TX | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| WBWeatherford Baird Ct | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| GIGds International, LLC | Houston | TX | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| 2S2545 South LLC | Houston | TX | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| AVAbb Vetco Gray INC | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| AMAccuturn Manufacturing | Houston | TX | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| ALAdmp, LLC | Houston | TX | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| AGA Gardner Denver Product | Houston | TX | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| AIAirtek International | Houston | TX | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| ASAker Solutions | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| ATAlco Tool, INC. | Houston | TX | Machinery Manufacturing333512 | — | ◇ UNVERIFIED |
| ALAlfa Laval Houston | Houston | TX | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| ASAmerican Supply & Services of Houston INC | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
