| AMAfco Manufacturing INC. | Covington | KY | — | ◇ UNVERIFIED |
| AIAffival Incorporated | New Kensington | PA | — | ◇ UNVERIFIED |
| AKA & K Machine & Fab Shop, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| AMAlabama Metal Industries CORP | Bourbonnais | IL | — | ◇ UNVERIFIED |
| ASAlbany Steel INC | Albany | NY | — | ◇ UNVERIFIED |
| AIAllen Iron Works and Supply, INC. | Tarrant | AL | — | ◇ UNVERIFIED |
| ASAllied Steel CO INC | Riverside | CA | — | ◇ UNVERIFIED |
| AMAll Metal Recycling INC | Springfield | MO | — | ◇ UNVERIFIED |
| ASAllstate Steel CO | Jacksonville | FL | — | ◇ UNVERIFIED |
| ASAll Steel Construction-malvern Facility | Malvern | AR | — | ◇ UNVERIFIED |
 Alonso & Carus Iron Works INC | Catano | PR | — | ◇ UNVERIFIED |
| ASAlpine Steel Fabricators | Colorado Springs | CO | — | ◇ UNVERIFIED |
| AIAlply INC | De Kalb | MS | — | ◇ UNVERIFIED |
| ASAlro Steel INC (1431154016) | Cincinnati | OH | — | ◇ UNVERIFIED |
| AIAltrachem INC | Joliet | IL | — | ◇ UNVERIFIED |
| ABAmer Bridge Holding Co/coraopolis | Coraopolis | PA | — | ◇ UNVERIFIED |
| ACAmerican Cargo Group Trailers LLC Pa Div | Mcadoo | PA | — | ◇ UNVERIFIED |
| AIAmerican Idustrial Fabricators INC | Saint Amant | LA | — | ◇ UNVERIFIED |
| ACAmeristeel CORP | Plant City | FL | — | ◇ UNVERIFIED |
| ARAmg Resources CORP | Youngstown | OH | — | ◇ UNVERIFIED |
| AMAngelini Metal Works | Hialeah | FL | — | ◇ UNVERIFIED |
| ASAnrod Screen Cylinder CO | Cass City | MI | — | ◇ UNVERIFIED |
| AFApex Fabrication & Design INC | Boyertown | PA | — | ◇ UNVERIFIED |
| ARArchitectural Rails INC | Panama City | FL | — | ◇ UNVERIFIED |
| ASArchitectural Stone Werkes | Seattle | WA | — | ◇ UNVERIFIED |
| ATArch Treatment Products (biocides) | Cheshire | CT | — | ◇ UNVERIFIED |
| ALArcron LLC | Menomonee Falls | WI | — | ◇ UNVERIFIED |
| AIAsc, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| ASAshley Steel, INC. | N Charleston | SC | — | ◇ UNVERIFIED |
| AIAs-tech Industries INC | Warren | MI | — | ◇ UNVERIFIED |
| ACAtlas Copco Hurricane LLC | Franklin | IN | — | ◇ UNVERIFIED |
 Atlas Industrial Holdings, Lle (0125042240) | Columbus | OH | — | ◇ UNVERIFIED |
| APAy-mac Precision | Windsor | CO | — | ◇ UNVERIFIED |
| BABabcock and Wilcox Company | West Point | MS | — | ◇ UNVERIFIED |
| BSBae Systems Container Solutions, INC. | Berthoud | CO | — | ◇ UNVERIFIED |
| BBBailey Bridges, INC. | Fort Payne | AL | — | ◇ UNVERIFIED |
| BSBanker Steel South Plant | Lynchburg | VA | — | ◇ UNVERIFIED |
| BOBardons & Oliver, INC. | Solon | OH | — | ◇ UNVERIFIED |
| BSBarker Steel LLC | South Deerfield | MA | — | ◇ UNVERIFIED |
| BSBarker Steel LLC | South Windsor | CT | — | ◇ UNVERIFIED |
| BLBay LTD | Belle Chasse | LA | — | ◇ UNVERIFIED |
| BLBay LTD - Bay West Yard | Amelia | LA | — | ◇ UNVERIFIED |
| BOBay Offshore LTD - Bay North Yard | Amelia | LA | — | ◇ UNVERIFIED |
| BSBeck Steel | Lubbock | TX | — | ◇ UNVERIFIED |
| BSBell Steel INC. | Chandler | AZ | — | ◇ UNVERIFIED |
| BIBennington Iron Works INC | Bennington | VT | — | ◇ UNVERIFIED |
| BRBig Rivers Electric Kenneth Coleman Power Plant | Hawesville | KY | — | ◇ UNVERIFIED |
| BRBig R Manufacturing LLC | Greeley | CO | — | ◇ UNVERIFIED |
| BRBig R Mfg LLC Dba Big R Bridge | Greeley | CO | — | ◇ UNVERIFIED |
| BPBilt-rite Products CO | Russellville | KY | — | ◇ UNVERIFIED |
| BFBlazer Fabricating LLC Bessemer Plant | Bessemer | AL | — | ◇ UNVERIFIED |
| BHBlp Holdings | Houston | TX | — | ◇ UNVERIFIED |
| BMBmc Metalworks LLC | Columbia | TN | — | ◇ UNVERIFIED |
| BWBp Warehouse | Hammond | IN | — | ◇ UNVERIFIED |
| BMBraden Manufacturing | Fort Smith | AR | — | ◇ UNVERIFIED |
| BCBratton Corporation | Kansas City | MO | — | ◇ UNVERIFIED |
| BSBreed Steering Sys. INC. | Grabill | IN | — | ◇ UNVERIFIED |
| BMBressler Metal Works, INC. | Lebanon | PA | — | ◇ UNVERIFIED |
| BSBristol Steel & Conveyor | Davison | MI | — | ◇ UNVERIFIED |
| BHBroadwind Heavy Industries | Clintonville | WI | — | ◇ UNVERIFIED |
 Brownell Boat Stands | Mattapoisett | MA | — | ◇ UNVERIFIED |
| BRBrown & Root Incorporated Greens Bayou Fabrication Yard | Houston | TX | — | ◇ UNVERIFIED |
| BIBrunnquell Iron Works INC | South Brunswick Twp | NJ | — | ◇ UNVERIFIED |
| BMBtd Manufacturing INC. | Dawsonville | GA | — | ◇ UNVERIFIED |
| BMBtd Mfg INC | Lakeville | MN | — | ◇ UNVERIFIED |
| BEBuffalo Equipment CO | Columbus | NE | — | ◇ UNVERIFIED |
| BEBuhrt Engineering Incorporated | Warsaw | IN | — | ◇ UNVERIFIED |
| BMBusby Marine and Tank INC | Tacoma | WA | — | ◇ UNVERIFIED |
| BWB & W Metals | Houston | TX | — | ◇ UNVERIFIED |
| CICaid Industries INC. | Tucson | AZ | — | ◇ UNVERIFIED |
| CMCaldwell Manufacturing CO | Kearney | NE | — | ◇ UNVERIFIED |
| CBCallaway Barge Lines INC | Green Cove Springs | FL | — | ◇ UNVERIFIED |
| CBCameron Bridge Works LLC | Elmira | NY | — | ◇ UNVERIFIED |
| CRCameron Rig Solutions - River Plant | Vicksburg | MS | — | ◇ UNVERIFIED |
| CECannon Equipment Southeast | Chattanooga | TN | — | ◇ UNVERIFIED |
| CFCannon Fabrication INC | Corona | CA | — | ◇ UNVERIFIED |
| CFCardinal Fab-williamston | Williamston | MI | — | ◇ UNVERIFIED |
| CCCareys Construction Company INC | Jackson | MS | — | ◇ UNVERIFIED |
| CFCarswell Firman L Mfg CO INC | Kansas City | KS | — | ◇ UNVERIFIED |
| CCCatalina Composites | Garden Grove | CA | — | ◇ UNVERIFIED |
| CGCaterpillar Global Mining | South Milwaukee | WI | — | ◇ UNVERIFIED |
| CICaterpillar INC Seals Metalcasting Facility | Toccoa | GA | — | ◇ UNVERIFIED |
| CPCaterpillar Paving Products INC | New Ulm | MN | — | ◇ UNVERIFIED |
| CBCavo Build Design | Gloucester City | NJ | — | ◇ UNVERIFIED |
| CGCcc Group | San Antonio | TX | — | ◇ UNVERIFIED |
| CCC & C Fabrication, LLC | Lanett | AL | — | ◇ UNVERIFIED |
| CCC & C Iron Incorporated | Merrillville | IN | — | ◇ UNVERIFIED |
| CDCed Dba 3e | Des Moines | IA | — | ◇ UNVERIFIED |
| CACentral Al Fabricators INC | Columbiana | AL | — | ◇ UNVERIFIED |
| CDCentral Denver Iron Works, INC | Denver | CO | — | ◇ UNVERIFIED |
| CFCentral Florida Custom Trailers, INC. | Orlando | FL | — | ◇ UNVERIFIED |
| CICentral Industrial Properties | Pawtucket | RI | — | ◇ UNVERIFIED |
| CCentria | Ambridge | PA | — | ◇ UNVERIFIED |
| CPCeramic Powders INC | Joliet | IL | — | ◇ UNVERIFIED |
| CWCerro Wire and Cable Company | Hartselle | AL | — | ◇ UNVERIFIED |
 Certified Slings & Supply | Tampa | FL | — | ◇ UNVERIFIED |
| CSCgb St Louis Shipyard | Saint Louis | MO | — | ◇ UNVERIFIED |
| CHChampion Home Builders - Arkansas City (w Madison Ave) | Arkansas City | KS | — | ◇ UNVERIFIED |
| CCChamplain Cable Pan American | El Paso | TX | — | ◇ UNVERIFIED |
| CIChc Industries Cleaners Hanger Company | Baltimore | MD | — | ◇ UNVERIFIED |
