| RBRoyal Baths Buschong Road Facility | Houston | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| RBRoyal Baths Manufacturing | Houston | TX | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| SMSalzgitter Mannesmann Stainless Tubes | Houston | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SCSchumacher CO INC | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| SPSouthwestern Plating Houston Plant | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
 Southwest Shipyard - Brady Island/brady West | Houston | TX | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| SCSyntech Chemicals | Houston | TX | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| TCTenarius Coiled Tube | Houston | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| THTexas Honing INC - North Facility | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| TVTuboscope Vetco International Plant 3 | Houston | TX | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| UGUnited Galvanizing INC | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| VQVarco Quality Tubing Tuboscope Div | Houston | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| VSVarco Shaffer Facility | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| WYWest Yard | Houston | TX | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| APAccurate Precision Plating | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| RCR&s Concrete | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SESamco Enterprises | Houston | TX | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| UEUltraclean Electropolish | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| APAddicks Plant | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
 Advanced Containment Systems | Houston | TX | Machinery Manufacturing333998 | — | ◇ UNVERIFIED |
| APAirline Plating | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ALAllegheny Ludlum CORP | Houston | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| ALAllegheny Ludlum Llc/houston Fitch Works | Houston | PA | Primary Metal Manufacturing331100 | — | ◇ UNVERIFIED |
| ADAllied Dean Chem | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| APAllied Plant 8 - Holmes Rd | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| APAllied Power Group | Houston | TX | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| APAlloy Products Group | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| APAmerican Plating | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AWAmerican Warehouses, LTD. | Houston | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| ALAmeriforge LTD Dba Forged Vessel Connections | Houston | TX | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| ATAnodize This | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ACApplied Cryo Technologies | Houston | TX | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| AWArchitectural Woodwork | Houston | TX | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| ACAshbrook CORP | Houston | TX | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| BHBaker Hughes Sheldon Road Plant | Houston | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| BBB & B Plating | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BTBell Trucks America INC. | Houston | TX | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| BHBlp Holdings | Houston | TX | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| BMBonanza Marble | Houston | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| BCBray Controls | Houston | TX | Fabricated Metal Product Manufacturing332911 | — | ◇ UNVERIFIED |
| BSBrenntag Southwest - Greens Bayou | Houston | TX | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| BMBright Metals of the Heights | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BRBrown & Root Incorporated Greens Bayou Fabrication Yard | Houston | TX | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| BWB & W Metals | Houston | TX | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| CCCamo Chemical | Houston | TX | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| CRCampbell Rmc Hardy Street | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CSCapital Southwest Rectorseal | Houston | TX | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| CGCaterpillar Global Mining Amer Llc/houston | Houston | PA | Machinery Manufacturing333131 | — | ◇ UNVERIFIED |
| CXCdab Xii | Houston | TX | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| CECemex Ellington Plant | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
