| NRNatl Roll Co/vertical Seal CO | Pleasantville | PA | — | ◇ UNVERIFIED |
| NSNatl Smelting & Refining CO | Commerce City | CO | — | ◇ UNVERIFIED |
| NSNaval Support Activity | Mechanicsburg | PA | — | ◇ UNVERIFIED |
| NHNeotiss Hpt INC (formerly Vallourec Heat Exchanger Tubes; Formerly Valtimet, INC | Morristown | TN | — | ◇ UNVERIFIED |
| NCNewark Carting INC | Newark | NJ | — | ◇ UNVERIFIED |
| NRNewell Recycling of San Antonio | San Antonio | TX | — | ◇ UNVERIFIED |
| NHNew Horizon Florida, INC Dba New Horizon Pm | Pinellas Park | FL | — | ◇ UNVERIFIED |
| NPNew Process Steel - Nps | Alsip | IL | — | ◇ UNVERIFIED |
| NYNew York Solder Co., INC. | Bronx | NY | — | ◇ UNVERIFIED |
| NMNexans Magnet Wire INC | La Grange | KY | — | ◇ UNVERIFIED |
| NMNgk Metals CORP | Reading | PA | — | ◇ UNVERIFIED |
| NLNiagara Lasalle Corporation | Chattanooga | TN | — | ◇ UNVERIFIED |
| NLNiagara Lasalle Corporation | Hammond | IN | — | ◇ UNVERIFIED |
| NENickel Electric Inc. | Wallkill | NY | — | ◇ UNVERIFIED |
| NBNielsen & Bainbridge, LLC. | Bridgeview | IL | — | ◇ UNVERIFIED |
| NINl Industries | Pedricktown | NJ | — | ◇ UNVERIFIED |
| NMNoble Metal Services | Cranston | RI | — | ◇ UNVERIFIED |
| NFNon Ferrous Recycling | South Plainfield | NJ | — | ◇ UNVERIFIED |
| NRNoranda Recycling INC | San Jose | CA | — | ◇ UNVERIFIED |
| NANorth American Stainless | Ghent | KY | — | ◇ UNVERIFIED |
| NCNorth Coast Steel LLC | Willoughby | OH | — | ◇ UNVERIFIED |
| NMNortheast Metal Processors, INC. | Plantersville | MS | — | ◇ UNVERIFIED |
| NENorthern Empire, LLC | Walker | MN | — | ◇ UNVERIFIED |
| NNNorthwest Noble Metals | Spokane | WA | — | ◇ UNVERIFIED |
| NTNss Technologies, INC. | Tyler | TX | — | ◇ UNVERIFIED |
 Nucor Steel Memphis INC | Memphis | TN | — | ◇ UNVERIFIED |
| NDNyc Dept of Parks-columbia Smelting & Refining Works Site | Brooklyn | NY | — | ◇ UNVERIFIED |
| OIOcm Industries CORP. | Miami | FL | — | ◇ UNVERIFIED |
| OIOgs/cascade INC | Salem | OR | — | ◇ UNVERIFIED |
| OSOld School Services | Henderson | TX | — | ◇ UNVERIFIED |
| OSOlympic Steel INC | Detroit | MI | — | ◇ UNVERIFIED |
| OMOmco Midwest Roll Forming | Pierceton | IN | — | ◇ UNVERIFIED |
| OOOmni Oxide CORP Ohio Oxide Div | Lancaster | OH | — | ◇ UNVERIFIED |
| OOOmni Oxide Georgia Oxide | Lithonia | GA | — | ◇ UNVERIFIED |
| OMOmnisource - Montvale | Montvale | VA | — | ◇ UNVERIFIED |
| OSOmnisource Sturgis | Sturgis | MI | — | ◇ UNVERIFIED |
| OMO'neal Manufacturing Services | Ambridge | PA | — | ◇ UNVERIFIED |
| OSOregon Steel Mills-fontana Div | Fontana | CA | — | ◇ UNVERIFIED |
| OSOsram Sylvania - Closed | Waldoboro | ME | — | ◇ UNVERIFIED |
| OSOutokumpu Stainless | Richburg | SC | — | ◇ UNVERIFIED |
| OSOwens Steel Fabricators, INC. | Dallas | GA | — | ◇ UNVERIFIED |
| PSPacific Steel Group | Bloomington | CA | — | ◇ UNVERIFIED |
| PGPanther Global Technologies | Wixom | MI | — | ◇ UNVERIFIED |
| PMPanther Machine INC | Wixom | MI | — | ◇ UNVERIFIED |
| PMParamount Metals & Supply CO | Paramount | CA | — | ◇ UNVERIFIED |
| PIPaughco, INC | Mound House | NV | — | ◇ UNVERIFIED |
| PMPaul Matsumoto | Rio Linda | CA | — | ◇ UNVERIFIED |
| PAPeerless Alloy INC | Denver | CO | — | ◇ UNVERIFIED |
 Penco Products INC | Vicksburg | MS | — | ◇ UNVERIFIED |
| PFPenny Fabrication | Johnstown | OH | — | ◇ UNVERIFIED |
| PCPerformance Construction LLC | Kissimmee | FL | — | ◇ UNVERIFIED |
| PCPerryman Co/frackville | Frackville | PA | — | ◇ UNVERIFIED |
| PAPioneer Air Systems INC | Wartburg | TN | — | ◇ UNVERIFIED |
| PWPioneer Welding, LLC | Sauk Rapids | MN | — | ◇ UNVERIFIED |
| PFPittsburgh Flatroll Company | Pittsburgh | PA | — | ◇ UNVERIFIED |
| PKP Kay Metal INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| PSPkm Steel Service - Salina (s Ave C) | Salina | KS | — | ◇ UNVERIFIED |
| PSP&l Scrap Metal Iron INC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| PMPower Mount INC | Somerset | KY | — | ◇ UNVERIFIED |
| PSPowers Solar Frames, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| PSPowers Steel & Wire Products INC | Phoenix | AZ | — | ◇ UNVERIFIED |
| PKPpc Kinne Road | East Syracuse | NY | — | ◇ UNVERIFIED |
| PMPrecious Metal Refining Svcs INC | Wauconda | IL | — | ◇ UNVERIFIED |
| PSPrecision Specialty Metals INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| PRProfessional Refinishing Org | La Puente | CA | — | ◇ UNVERIFIED |
| PIProfiles INC | Palmer | MA | — | ◇ UNVERIFIED |
| PIProfiners Inc/hatfield Twp Plt | Hatfield | PA | — | ◇ UNVERIFIED |
| PRProgress Rail Services | Albertville | AL | — | ◇ UNVERIFIED |
| PFPrototype Fabricators Co. | Cleveland | OH | — | ◇ UNVERIFIED |
| PMPsc Metals, INC. | Koppel | PA | — | ◇ UNVERIFIED |
| PZPurity Zinc Metals | Madisonville | KY | — | ◇ UNVERIFIED |
| QAQuailty Automotive | Westminster | CA | — | ◇ UNVERIFIED |
 Quality Aluminum Forge INC | Long Beach | CA | — | ◇ UNVERIFIED |
| QEQuality Engineered Steels, LLC Dba Wv Cold Drawn | Point Pleasant | WV | — | ◇ UNVERIFIED |
 Quality Metal Works | Plant City | FL | — | ◇ UNVERIFIED |
| QIQuemetco INC | City of Industry | CA | — | ◇ UNVERIFIED |
| RCRacran Corporation | Mount Pleasant | TN | — | ◇ UNVERIFIED |
| RGRaiden Group Site Development | Atwood | KS | — | ◇ UNVERIFIED |
| RMRead Manufacturing Co., INC. | Holbrook | NY | — | ◇ UNVERIFIED |
| RCRefinity CORP | Lynn | MA | — | ◇ UNVERIFIED |
| RURegenx USA INC | Greeneville | TN | — | ◇ UNVERIFIED |
| RSRegional Steel CORP | Fontana | CA | — | ◇ UNVERIFIED |
| RTReliable Temps, INC. | Palmer | MA | — | ◇ UNVERIFIED |
| RWReliable Welding, INC. | Tampa | FL | — | ◇ UNVERIFIED |
| RERepublic Engineered Products, LLC - Gary Dunes Plant | Gary | IN | — | ◇ UNVERIFIED |
| RERepublic Engineered Steel, INC | Naperville | IL | — | ◇ UNVERIFIED |
| RMRepublic Metals CORP | Opa Locka | FL | — | ◇ UNVERIFIED |
| RTRepublic Technologies International LLC | Harvey | IL | — | ◇ UNVERIFIED |
| RHRFH Holdings LLC | Hamilton | OH | — | ◇ UNVERIFIED |
| RCRidgeline Capital Holding Corp. | Waltham | MA | — | ◇ UNVERIFIED |
| RMRitchey Metals/scenery Hill | Scenery Hill | PA | — | ◇ UNVERIFIED |
| RTRmi Titanium CO. Sodium Plant | Ashtabula | OH | — | ◇ UNVERIFIED |
| RMRocky Mountain Radiographic | Englewood | CO | — | ◇ UNVERIFIED |
| RMRoler Machine Shop Incorporated | Brownsville | TX | — | ◇ UNVERIFIED |
| RFRoll Former Corporation | Chalfont | PA | — | ◇ UNVERIFIED |
| RTRolling, Tank and Fabrication Inc | Eighty Four | PA | — | ◇ UNVERIFIED |
| RIRti International Metals INC. | Sullivan | MO | — | ◇ UNVERIFIED |
| RIRti International Metals, INC | Niles | OH | — | ◇ UNVERIFIED |
| RARucker and Kolls INC | Milpitas | CA | — | ◇ UNVERIFIED |
| RIRyerson INC. | Eldridge | IA | — | ◇ UNVERIFIED |
