| HCHorsehead Corp/bartlesville Div | Bartlesville | OK | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| HEHydro-dyne Engineering | Clearwater | FL | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| MSMetal Services - Bay 2 | Hialeah | FL | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| SMStillwater Mining CO Smelter | Columbus | MT | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| STSurface Technology | Ewing | NJ | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| TMTitanium Metals Corporation | Henderson | NV | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| WZWestern Zirconium | Ogden | UT | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| AGAds Gold INC | Anaheim | CA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| ARArmena Refining USA | New York | NY | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| AAsarco | Helena | MT | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| CMCarbide Metals INC | Youngstown | OH | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| CKCentral Ky Process | Lexington | KY | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| CRCommodity Resource & Envrnmtl | Mojave | CA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| DHDavid H Fell & CO INC | Commerce | CA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| DRDoral Refining CORP | Freeport | NY | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| EGEnviro-tek Global, LLC | Fort Lauderdale | FL | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| GIGrede Ii - Selma | Selma | AL | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| HSHemlock Semiconductor, L.l.c. | Clarksville | TN | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| HLHerculaneum - Lead Smelter Site | Herculaneum | MO | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| HZHorsehead Zinc Powders LLC | Monaca | PA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| JTJp Technology INC. | Logan Twp | NJ | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| KBKemet Blue Powder | Carson City | NV | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| KKennametal-town | Fallon | NV | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| KUKennecott Utah Copper LLC | South Jordan | UT | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| KNKeweenaw National Historical Park Advisory Commission | Hancock | MI | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| LELead Enterprises INC | Miami | FL | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| MMMayco Mfg LLC | Granite City | IL | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| MZMitsui Zinc Powder | Monaca | PA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| MAModern Art Services | Long Island City | NY | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| PMPittsburgh Metal & Equipment CO | Jersey City | NJ | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| PMPrecious Metals Refiners LLC | Redford | MI | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| SISalvage I Recycling INC | Chino | CA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| SFSequoyah Fuels Corporation | Gore | OK | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| SASilver Anvil Engineering Corporation | Golden | CO | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| SPSmc Precious Metals Smelter & Base Metal Refy | Columbus | MT | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| SMSouthern Metal Processing | Saint Louis | MO | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| UAUS Antimony CORP | Thompson Falls | MT | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| AMArkansas Magnesium LLC | Stamps | AR | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| AMATI - Millersburg Operations | Albany | OR | Primary Metal Manufacturing331410 | 500+ | ◐ LIKELY ACTIVE |
| AGAviary Group America Incorporated | Crestwood | KY | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| BGBlack Growth and Development LLC | Katy | TX | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| DIDuranium INC. | Alameda | CA | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| EGElemental Genesis Technologies INC | Morgantown | WV | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| FFallon | Fallon | NV | Primary Metal Manufacturing331410 | 20-99 | ◐ LIKELY ACTIVE |
| GIGathol Industries | Las Vegas | NV | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| GFGeneral Flash CORP | Lexington | MA | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| KRKennecott Refinery | Magna | UT | Primary Metal Manufacturing331410 | 100-499 | ◐ LIKELY ACTIVE |
| KSKennecott Smelter | Magna | UT | Primary Metal Manufacturing331410 | 100-499 | ◐ LIKELY ACTIVE |
| LALinde Advanced Material Technologies | Orangeburg | NY | Primary Metal Manufacturing331410 | 20-99 | ◐ LIKELY ACTIVE |
| MCMuller Copper Line Sets | Fulton | MS | Primary Metal Manufacturing331410 | 100-499 | ◐ LIKELY ACTIVE |