| AEAnaheim Extrusion CO | Anaheim | CA | Primary Metal Manufacturing331319 | — | ◇ UNVERIFIED |
| AIAncast INC. | Sodus | MI | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| ASAndersen's Sales & Salvage INC | Greeley | CO | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| AWAndrews Wire Products CO | Andrews | SC | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| AAndritz | Tualatin | OR | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| AIAnduril Industries INC | Mchenry | MS | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| ALAozi-brookville, LLC | Indianapolis | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
 Api Heat Transfer INC. | Montgomery | AL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| APApplied Partners, Inc., Ravenswood | Ravenswood | WV | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| APApplied Plasma INC | Millwood | WV | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| AHArcelormittal Hennepin LLC | Hennepin | IL | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
 Arch Enterprises INC | Mexico | MO | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| AUArconic U.s., Llc, South Plant | Alcoa | TN | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| ARArmena Refining USA | New York | NY | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| AAArnett Automotive | Pratt | KS | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| ATArora Technologies INC | Huntsville | AL | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| AAArrow Acme CORP. | Webster City | IA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| ABArrowhead Brass Products | Los Angeles | CA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| APArrow Pattern and Foundry CO | Bridgeview | IL | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| ACArtco Chemical | Glenmont | NY | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| AAsarco | Helena | MT | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| APAstroseal Products Manufacturing | Chester | CT | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| AFAtherton Foundry Products INC | Riverdale | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| ACAti Casting Service | Alpena | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ACAtlantic Coast Recycling INC | Fort Pierce | FL | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| ARAtlantic Richfield - Ar | Hastings-on-hudson | NY | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| AMAtlas Metal & Iron CORP | Denver | CO | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| AMAtlas Metals & Iron CORP | Denver | CO | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| ASAtlas Steel & Wire Gerdau Ameristeel US INC | Harahan | LA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| ATAtlas Tube-blytheville Plant | Armorel | AR | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| AFAuburn Foundry INC | Auburn | NY | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| AFAuburn Foundry, INC Plant 1 | Auburn | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| AIAuburn Investment Castings | Auburn | AL | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| ACAutomatic Castings, INC. | Green Forest | AR | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| APAvalon Precision Casting Company LLC | Cleveland | OH | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| BFBabs Foundry | Norton | MA | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| BEBaldor Electric Company | Columbus | MS | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| BMBalimoy Manufacturing Company | Tampa | FL | Primary Metal Manufacturing331319 | — | ◇ UNVERIFIED |
| BMBarbay Machine Works | Beaumont | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| BSBarberton Steel Industries, INC. | Barberton | OH | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| BIBarcel/cdt INC | Irvine | CA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| BMBardane Mfg Co/jermyn Plt | Jermyn | PA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| BOBarrette Outdoor Living, INC. | Egg Harbor City | NJ | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| BPBarry Pattern and Foundry Company, INC. | Birmingham | AL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| BMBase Metals Group | Alsip | IL | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| BCBasf Catalysts | Plainville | MA | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| BMBassett Mechanical INC | Kaukauna | WI | Primary Metal Manufacturing331200 | — | ◇ UNVERIFIED |
| BABay Area Metals Recycling, INC. | Bens Run | WV | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| BBB & B Pipe & Tool Company | Long Beach | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| BMBeauregard Memorial Hospital | Deridder | LA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
