| ABAmer Bridge Holding Co/coraopolis | Coraopolis | PA | — | ◇ UNVERIFIED |
| ABAmerican Beryllium Corporation | Tallevast | FL | — | ◇ UNVERIFIED |
| ABAmerican Boiler Works | Arlington | WA | — | ◇ UNVERIFIED |
| ABAmerican Builders & Contractors Supply CO INC Dba American Construction Metals | Lodi | CA | — | ◇ UNVERIFIED |
| ABAmerican Building Products | Salem | IL | — | ◇ UNVERIFIED |
| ACAmerican Cargo Group Trailers LLC Pa Div | Mcadoo | PA | — | ◇ UNVERIFIED |
 American Fabrication Site | Idaho Falls | ID | — | ◇ UNVERIFIED |
| AFAmerican Fiberglass Corporation | Rock Hill | SC | — | ◇ UNVERIFIED |
| AHAmerican Hood Systems INC. | Elyria | OH | — | ◇ UNVERIFIED |
| AHAmerican Hvac Mfg INC | Huntington Park | CA | — | ◇ UNVERIFIED |
| AIAmerican Idustrial Fabricators INC | Saint Amant | LA | — | ◇ UNVERIFIED |
| AMAmerican Machine & Manufacturing, INC. | Abbeville | AL | — | ◇ UNVERIFIED |
| ATAmerican Tool Center Lansing | Lansing | MI | — | ◇ UNVERIFIED |
| ACAmeristeel CORP | Plant City | FL | — | ◇ UNVERIFIED |
| ASAmeron Steel Fabrication Division | Fontana | CA | — | ◇ UNVERIFIED |
| ARAmg Resources CORP | Youngstown | OH | — | ◇ UNVERIFIED |
| ARAmsted Rail Company INC | Homer | MI | — | ◇ UNVERIFIED |
| AMAnderson Machine and Metal Works LTD | Blue Creek | OH | — | ◇ UNVERIFIED |
| ASAnderson Silver Plating CO INC | Elkhart | IN | — | ◇ UNVERIFIED |
| AWAnderson Woodwaste & Recycling INC | Anderson | SC | — | ◇ UNVERIFIED |
| AIAndritz, INC. | Pell City | AL | — | ◇ UNVERIFIED |
| AMAngelini Metal Works | Hialeah | FL | — | ◇ UNVERIFIED |
| ABApex Blasting | Baytown | TX | — | ◇ UNVERIFIED |
| AFApex Fabrication & Design INC | Boyertown | PA | — | ◇ UNVERIFIED |
| AHApi Heat Transfer INC | Arcade | NY | — | ◇ UNVERIFIED |
| AMApollo Machine & Mfg INC | Micco | WV | — | ◇ UNVERIFIED |
| AIApple INC. (ur01) | Sunnyvale | CA | — | ◇ UNVERIFIED |
| AMApril Metal Works LLC | Hudson | NH | — | ◇ UNVERIFIED |
| AFAptim Facilities INC | Prairieville | LA | — | ◇ UNVERIFIED |
| AEApw Erie/erie | Erie | PA | — | ◇ UNVERIFIED |
| AMApw Mayville LLC | Creedmoor | NC | — | ◇ UNVERIFIED |
| AMApx Mitchell Machine Shop | Greencastle | PA | — | ◇ UNVERIFIED |
| ATAranda Tooling INC | Chino | CA | — | ◇ UNVERIFIED |
| ARArchitectural Rails INC | Panama City | FL | — | ◇ UNVERIFIED |
| ALArcron LLC | Menomonee Falls | WI | — | ◇ UNVERIFIED |
| AMArko Machine Products INC | Arkadelphia | AR | — | ◇ UNVERIFIED |
| ARArmey Rutter INC | Fresno | CA | — | ◇ UNVERIFIED |
| ATArnold Tool INC | Council Bluffs | IA | — | ◇ UNVERIFIED |
| ALArup Laboratories | Salt Lake City | UT | — | ◇ UNVERIFIED |
| AIArvin Industries INC | Greenwood | IN | — | ◇ UNVERIFIED |
| AQAscension Quality Materials LLC - Prairieville Plant | Prairieville | LA | — | ◇ UNVERIFIED |
| AIAsc, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| ASAshley Steel, INC. | N Charleston | SC | — | ◇ UNVERIFIED |
| AIAs-tech Industries INC | Warren | MI | — | ◇ UNVERIFIED |
| ASAstralloy Steel Products INC | Masury | OH | — | ◇ UNVERIFIED |
| AAti | East Hartford | CT | — | ◇ UNVERIFIED |
| ALAti Ladish LLC | Coon Valley, Village of | WI | — | ◇ UNVERIFIED |
| AMAtlanta Metal Products, INC. | Mableton | GA | — | ◇ UNVERIFIED |
| AIAtlantic Industrial Finishing INC | Creedmoor | NC | — | ◇ UNVERIFIED |
| ACAtlas Copco Hurricane LLC | Franklin | IN | — | ◇ UNVERIFIED |
 Atlas Industrial Holdings, Lle (0125042240) | Columbus | OH | — | ◇ UNVERIFIED |
| Atlas Industrial Manufacturing | Clifton City | NJ | — | ◇ UNVERIFIED |
| AIAwelco INC | North Attleboro | MA | — | ◇ UNVERIFIED |
| AWAxis Welding & Machine Works INC | Creola | AL | — | ◇ UNVERIFIED |
| AIAxletech International - US Gear Division | Chicago | IL | — | ◇ UNVERIFIED |
| APAy-mac Precision | Windsor | CO | — | ◇ UNVERIFIED |
| APAzusa Pipe & Tube Bending | Azusa | CA | — | ◇ UNVERIFIED |
| BSBabbitting Svc | South Elgin | IL | — | ◇ UNVERIFIED |
| BABabcock and Wilcox Company | West Point | MS | — | ◇ UNVERIFIED |
| BSBae Systems Container Solutions, INC. | Berthoud | CO | — | ◇ UNVERIFIED |
| BBBailey Bridges, INC. | Fort Payne | AL | — | ◇ UNVERIFIED |
| BMBaker Machine Co, INC | Shreveport | LA | — | ◇ UNVERIFIED |
| BEBaldor Electric | Clarksville | AR | — | ◇ UNVERIFIED |
| BAB and G Service | Cle Elum | WA | — | ◇ UNVERIFIED |
| BSBanker Steel South Plant | Lynchburg | VA | — | ◇ UNVERIFIED |
| BOBardons & Oliver, INC. | Solon | OH | — | ◇ UNVERIFIED |
| BSBarker Steel LLC | South Windsor | CT | — | ◇ UNVERIFIED |
| BSBarker Steel LLC | South Deerfield | MA | — | ◇ UNVERIFIED |
| BMBarrington Manufacturing | El Dorado Springs | MO | — | ◇ UNVERIFIED |
 Basic Carbide Corp/lowber Facility | Lowber | PA | — | ◇ UNVERIFIED |
| BRBaton Rouge Machine Works INC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| BLBay LTD | Belle Chasse | LA | — | ◇ UNVERIFIED |
| BLBay LTD | Billings | MT | — | ◇ UNVERIFIED |
| BLBay LTD - Bay West Yard | Amelia | LA | — | ◇ UNVERIFIED |
| BMBay Machining and Sales INC | Bay City | MI | — | ◇ UNVERIFIED |
| BMBay Mechanical Incorporated | Virginia Beach | VA | — | ◇ UNVERIFIED |
| BOBay Offshore LTD - Bay North Yard | Amelia | LA | — | ◇ UNVERIFIED |
| BCB C Doering | Costa Mesa | CA | — | ◇ UNVERIFIED |
| BABearcat Anodizing | Goshen | IN | — | ◇ UNVERIFIED |
| BSBeck Steel | Lubbock | TX | — | ◇ UNVERIFIED |
| BSBell Steel INC. | Chandler | AZ | — | ◇ UNVERIFIED |
| BMBender Machine INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| BNBenner Nawman INC | Wickenburg | AZ | — | ◇ UNVERIFIED |
| BIBennington Iron Works INC | Bennington | VT | — | ◇ UNVERIFIED |
| BTBent Tube INC | Fowlerville | MI | — | ◇ UNVERIFIED |
| BIBerkshire Industries | Westfield | MA | — | ◇ UNVERIFIED |
| BFB F Shaw INC | Laurens | SC | — | ◇ UNVERIFIED |
| BPB&g Powder Coating LLC | Watertown | SD | — | ◇ UNVERIFIED |
| BIBig Inch Fabricators & Construction Incorporated | Montezuma | IN | — | ◇ 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 |
| BJBird Johnson CO | Seattle | WA | — | ◇ UNVERIFIED |
| BMBiwal Mfg CO INC | Clifton City | NJ | — | ◇ UNVERIFIED |
| BJB & J, INC. | Sparks | NV | — | ◇ UNVERIFIED |
| BFBlazer Fabricating LLC Bessemer Plant | Bessemer | AL | — | ◇ UNVERIFIED |
| BFBlazer Fabricating, LLC (pawnee Plant) | Birmingham | AL | — | ◇ UNVERIFIED |
| BHBlp Holdings | Houston | TX | — | ◇ UNVERIFIED |
| BTBluegrass Tool & Industrial LLC | Lexington | KY | — | ◇ UNVERIFIED |
| BMBluestone Machine Company | Princeton | WV | — | ◇ UNVERIFIED |
