| MSMaca Supply CO | Springville | UT | — | ◇ UNVERIFIED |
| MIMagotteaux INC | Pulaski | TN | — | ◇ UNVERIFIED |
| MTMetal Technologies, Inc., Ravenna Ductile Iron | Ravenna | MI | — | ◇ UNVERIFIED |
| MTMetal Technologies INC -three Rivers Gray Iron | Three Rivers | MI | — | ◇ UNVERIFIED |
| MVM&h Valve Company, a Division of Mcwane, LLC | Anniston | AL | — | ◇ UNVERIFIED |
| MMMinster Machine CO | Minster | OH | — | ◇ UNVERIFIED |
| MWMotor Wheel Commercial Vehicle Systems INC | Chattanooga | TN | — | ◇ UNVERIFIED |
| MWMotor Wheel LLC | Franklin | KY | — | ◇ UNVERIFIED |
| MCMueller CO | Decatur | IL | — | ◇ UNVERIFIED |
| MCMueller CO | Decatur | IL | — | ◇ UNVERIFIED |
| MCMuncie Casting CORP | Muncie | IN | — | ◇ UNVERIFIED |
| NONational Oilwell Varco/tulsa Multiplex | Tulsa | OK | — | ◇ UNVERIFIED |
| NINibco INC | Blytheville | AR | — | ◇ UNVERIFIED |
| NFNorthern Foundry | Hibbing | MN | — | ◇ UNVERIFIED |
| NINorthern Iron & Machine | Saint Paul | MN | — | ◇ UNVERIFIED |
| OIOsco Industries, INC. New Boston Divisi (0773010180) | New Boston | OH | — | ◇ UNVERIFIED |
| OIOsco Industries INC Portsmouth Div | Portsmouth | OH | — | ◇ UNVERIFIED |
| OKO.s. Kelly Company (0812100276) | Springfield | OH | — | ◇ UNVERIFIED |
| PFPentair Flow Technologies, LLC - Ashland Pump Plant (0303010175) | Ashland | OH | — | ◇ UNVERIFIED |
| PFPier Foundry | Saint Paul | MN | — | ◇ UNVERIFIED |
| PMPrecision Metalsmiths INC. | Markesan | WI | — | ◇ UNVERIFIED |
| PFProspect Foundry LLC | Minneapolis | MN | — | ◇ UNVERIFIED |
| QCQuaker City Castings (0215090009) | Salem | OH | — | ◇ UNVERIFIED |
| QCQuality Castings CO | Waukesha | WI | — | ◇ UNVERIFIED |
| RHR H Sheppard CO INC | Hanover | PA | — | ◇ UNVERIFIED |
| RIRomac Industries | Sultan | WA | — | ◇ UNVERIFIED |
 Sioux City Foundry CO | South Sioux City | NE | — | ◇ UNVERIFIED |
| SAStandard Alloys Port Arthur | Port Arthur | TX | — | ◇ UNVERIFIED |
| SUStarpipe USA Dba Sp Foundry / Sp Foundry | South Coffeyville | OK | — | ◇ UNVERIFIED |
| SMSt. Marys Foundry INC. (0306010004) | Saint Marys | OH | — | ◇ UNVERIFIED |
| TCTextron Cwc Division | Muskegon | MI | — | ◇ UNVERIFIED |
| TCThe C.a. Lawton CO. | Minster | OH | — | ◇ UNVERIFIED |
| TFTonkawa Foundry INC / Tonkawa Foundry | Tonkawa | OK | — | ◇ UNVERIFIED |
| TFTpr Federal-mogul Tennessee, INC | Lawrenceburg | TN | — | ◇ UNVERIFIED |
| TPTyler Pipe | Tyler | TX | — | ◇ UNVERIFIED |
| UCUnicast Co/boyertown | Boyertown | PA | — | ◇ UNVERIFIED |
| UCUS Casting | Canton | OH | — | ◇ UNVERIFIED |
| UPUS Pipe & Foundry CO | Bessemer | AL | — | ◇ UNVERIFIED |
| VIValmet INC | Waukesha | WI | — | ◇ UNVERIFIED |
| VMVestal Mfg CO | Sweetwater | TN | — | ◇ UNVERIFIED |
| VFVictaulic-horizon Facility | Nephi | UT | — | ◇ UNVERIFIED |
| VPViking Pump INC - South Main Facility | Cedar Falls | IA | — | ◇ UNVERIFIED |
| VCVorteq Coil Finishers Llc/allentown | Allentown | PA | — | ◇ UNVERIFIED |
| WMWard Mfg Plt 1 & 2 | Blossburg | PA | — | ◇ UNVERIFIED |
| WVWaterman Valve, LLC | Exeter | CA | — | ◇ UNVERIFIED |
 Waupaca Foundry, INC. - Plant 1 (ironwood) | Ironwood | MI | — | ◇ UNVERIFIED |
| WCWeatherly Casting & Mach CO Llc/weatherly Plt | Weatherly | PA | — | ◇ UNVERIFIED |
| WMWeil Mclain a United Dominion Company | Michigan City | IN | — | ◇ UNVERIFIED |
| WCWescast Casting Cordele LLC | Cordele | GA | — | ◇ UNVERIFIED |
| WFWestern Foundries INC | Longmont | CO | — | ◇ UNVERIFIED |
