| NMNew Mansfield Brass and Aluminum | New Washington | OH | — | ◇ UNVERIFIED |
| NANorthern Aluminum Foundry | North Fond Du Lac | WI | — | ◇ UNVERIFIED |
| NANorthwest Aluminum & Brass Foundries, INC. | Muskego | WI | — | ◇ UNVERIFIED |
| NBNorthwest Brass & Aluminum Foundry INC | Portland | OR | — | ◇ UNVERIFIED |
| NCNorthwest Casting INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| OLOberdorfer LLC | Syracuse | NY | — | ◇ UNVERIFIED |
| OOjibway | Ecorse | MI | — | ◇ UNVERIFIED |
| OCO'keefe Casting | Lorain | OH | — | ◇ UNVERIFIED |
| OAOlson Aluminum Castings | Rockford | IL | — | ◇ UNVERIFIED |
| OCOntario Castings, Performance Aluminum Products, Reeds Patterns & Molds, R&S ... | Ontario | CA | — | ◇ UNVERIFIED |
 O&y Precision INC | San Jose | CA | — | ◇ UNVERIFIED |
| PFPalmer Foundry | Palmer | MA | — | ◇ UNVERIFIED |
| PIPal-tec INC | Wallace | MI | — | ◇ UNVERIFIED |
| PSPcc Structurals | Groton | CT | — | ◇ UNVERIFIED |
| PSPcc Structurals INC | Portland | OR | — | ◇ UNVERIFIED |
 Pcc Structurals, INC. | Clackamas | OR | — | ◇ UNVERIFIED |
| PCPechiney Cast Plate INC | Vernon | CA | — | ◇ UNVERIFIED |
| PAPerformance Aluminum Products | Ontario | CA | — | ◇ UNVERIFIED |
| PIPhoenix Industries | Juniata | NE | — | ◇ UNVERIFIED |
| PAPortage Aluminum Foundry | Galesburg | MI | — | ◇ UNVERIFIED |
| PPPost Precision Castings INC | Strausstown | PA | — | ◇ UNVERIFIED |
| PFPrecise Forms, INC. | Bates City | MO | — | ◇ UNVERIFIED |
| PCPrecision Castparts CORP. | Carson City | NV | — | ◇ UNVERIFIED |
| PCPrecision Cut Ind - 60 Ram Drive | Hanover | PA | — | ◇ UNVERIFIED |
 Precision Founders, INC. Dba Pcc Structurals San Leandro | San Leandro | CA | — | ◇ UNVERIFIED |
| PCPro Cast Industries | Paramount | CA | — | ◇ UNVERIFIED |
| PCProduction Castings | Missouri | MO | — | ◇ UNVERIFIED |
| PCProgress Casting Group INC - Albert Lea | Albert Lea | MN | — | ◇ UNVERIFIED |
| PCProgress Casting Group INC - Plymouth | Plymouth | MN | — | ◇ UNVERIFIED |
| PLProto Labs INC | Plymouth | MN | — | ◇ UNVERIFIED |
| QIQuality Investment Castings INC | Blandon | PA | — | ◇ UNVERIFIED |
| QMQuality Mold INC. | Akron | OH | — | ◇ UNVERIFIED |
| QNQuality Non-ferrous Foundry | Wyoming | MI | — | ◇ UNVERIFIED |
| QFQuincy Foundry & Pattern INC | Quincy | IL | — | ◇ UNVERIFIED |
| RPR2 Properties, LLC | Waukesha | WI | — | ◇ UNVERIFIED |
| RNRacer-saginaw Nodular Indust | Saginaw | MI | — | ◇ UNVERIFIED |
| RARavenna Aluminum Industries INC | Ravenna | OH | — | ◇ UNVERIFIED |
| RHRaymond Handling | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| RFRebah Fabrication INC. | Orlando | FL | — | ◇ UNVERIFIED |
| RMReed Manufacturing INC Dba American Casting CO | Hollister | CA | — | ◇ UNVERIFIED |
| RARegen Alum Llc/yoe | Yoe | PA | — | ◇ UNVERIFIED |
| RSRelativity Space INC | Inglenook | CA | — | ◇ UNVERIFIED |
| RIReo Industries, INC. Dba La Aluminum Casting CO. | Hayden | ID | — | ◇ UNVERIFIED |
| REReuland Electric CO | Industry | CA | — | ◇ UNVERIFIED |
| RWRichard W Hill LLC | Portland | OR | — | ◇ UNVERIFIED |
| RRRin & Rin LLC | West Valley City | UT | — | ◇ UNVERIFIED |
| RIR&k Industrial Products INC | Richmond | CA | — | ◇ UNVERIFIED |
| RWRobert White | Centralia | IL | — | ◇ UNVERIFIED |
| RFRockford Foundries | Rockford | IL | — | ◇ UNVERIFIED |
| RMRoe Machine & Pattern Works | Omaha | NE | — | ◇ UNVERIFIED |
| RARoss Aluminum Foundries Avon Div | Sidney | OH | — | ◇ UNVERIFIED |
| RARoss Aluminum Foundries Ii | Sidney | OH | — | ◇ UNVERIFIED |
| RCRoss Casting & Innovation, LLC | Sidney | OH | — | ◇ UNVERIFIED |
| RQRoyer Quality Castings, Incorporated | Boyertown | PA | — | ◇ UNVERIFIED |
| RERyan Engineering Design | Pellston | MI | — | ◇ UNVERIFIED |
| RRyerson | Marshalltown | IA | — | ◇ UNVERIFIED |
| SBS & B Aluminum Foundry, INC. | West Valley City | UT | — | ◇ UNVERIFIED |
| SSSewah Studios | Marietta | OH | — | ◇ UNVERIFIED |
| SAShipston Aluminum Technologies Incorporated | Franklin | IN | — | ◇ UNVERIFIED |
| SSSmt Sales INC Dba Tom's Mobil Welding | Santa Paula | CA | — | ◇ UNVERIFIED |
| SSodico/shrewsbury | New Freedom | PA | — | ◇ UNVERIFIED |
| SESolo Enterprise CORP | City of Industry | CA | — | ◇ UNVERIFIED |
| SASouthern Alloy CORP | Sylacauga | AL | — | ◇ UNVERIFIED |
| SISouthern Investment Casting CO | Blountville | TN | — | ◇ UNVERIFIED |
 Southern Tool INC | Oxford | AL | — | ◇ UNVERIFIED |
| SASpecialty Aluminum Incorporated | Revere | MA | — | ◇ UNVERIFIED |
| SBSpray Booth | Temple | TX | — | ◇ UNVERIFIED |
| SIStaffmark Investment LLC | Heber Springs | AR | — | ◇ UNVERIFIED |
| SSStahl Speciality CO North | Kingsville | MO | — | ◇ UNVERIFIED |
| SPSt Paul Brass and Aluminum Foundry | Saint Paul | MN | — | ◇ UNVERIFIED |
| SMStylelander Metal Stampings INC | Verona | MS | — | ◇ UNVERIFIED |
| SMSullivan Metals INC | Holly Springs | MS | — | ◇ UNVERIFIED |
| SISuperior Industries International INC | Van Nuys | CA | — | ◇ UNVERIFIED |
| TSTeam Staffing Solutions, INC. | Fairfield | IA | — | ◇ UNVERIFIED |
| TCTeledyne Cast Parts Pomona Operations | Walnut | CA | — | ◇ UNVERIFIED |
| TMTelstar Metals INC. | Chetopa | KS | — | ◇ UNVERIFIED |
| TATemp Associates | Fairfield | IA | — | ◇ UNVERIFIED |
| TATemple Aluminum Foundry, Incorporated | Blandon | PA | — | ◇ UNVERIFIED |
 Thermal Equipment Corporation | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| TPThomas Paulson & Son INC | Brooklyn | NY | — | ◇ UNVERIFIED |
| TIThompson Investment Casting | Rochester | NH | — | ◇ UNVERIFIED |
| TSThornton Salvage | Kankakee | IL | — | ◇ UNVERIFIED |
| TCTial Cast | Owosso | MI | — | ◇ UNVERIFIED |
| TBTl Becker Corporation | Eugene | OR | — | ◇ UNVERIFIED |
| TCToro Company | Shakopee | MN | — | ◇ UNVERIFIED |
| TFTrio Foundry INC | Aurora | IL | — | ◇ UNVERIFIED |
| TFTrio Foundry, INC | Sandwich | IL | — | ◇ UNVERIFIED |
| TCTurbo Components INC | Spring Lake | MI | — | ◇ UNVERIFIED |
| TCTwin City Holland LLC - Administrative Id # Only | Davenport | IA | — | ◇ UNVERIFIED |
| TBTy Bar CORP | South Gate | CA | — | ◇ UNVERIFIED |
| UCUltimate Casting and Machining | West Branch | MI | — | ◇ UNVERIFIED |
| UWUltra Wheel CO | Buena Park | CA | — | ◇ UNVERIFIED |
| UNUp North Industries LLC | Petoskey | MI | — | ◇ UNVERIFIED |
| UCUS Castings LLC | Entiat | WA | — | ◇ UNVERIFIED |
| UDU.s. Dol-osha Baton Rouge Area Office | Shreveport | LA | — | ◇ UNVERIFIED |
| UOUsdol Osha - Concord Area Office | Nashua | NH | — | ◇ UNVERIFIED |
| UOUsdol Osha - Concord Area Office | Hollis | NH | — | ◇ UNVERIFIED |
| UOUsdol Osha- North Aurora | Plano | IL | — | ◇ UNVERIFIED |
| UOUsdol Osha- North Aurora | Somonauk | IL | — | ◇ UNVERIFIED |
| UPUS Pole Company | Palmdale | CA | — | ◇ UNVERIFIED |
