| GWGraham White Mfg CO | Salem | VA | — | ◇ UNVERIFIED |
| GPGrant Prideco LP | Navasota | TX | — | ◇ UNVERIFIED |
| GIGray Iron Fndry | Blackwell | OK | — | ◇ UNVERIFIED |
| GWGreat Western Manufacturing CO. INC. | Leavenworth | KS | — | ◇ UNVERIFIED |
| GIGrede Ii, LLC - Brewton | Brewton | AL | — | ◇ UNVERIFIED |
| GLGrede LLC | New Castle | IN | — | ◇ UNVERIFIED |
| GLGrede LLC - Iron Mountain | Kingsford | MI | — | ◇ UNVERIFIED |
| GLGrede LLC - Liberty | Wauwatosa | WI | — | ◇ UNVERIFIED |
| GLGrede LLC - St Cloud | Saint Cloud | MN | — | ◇ UNVERIFIED |
| GPGriffin Pipe Products Company LLC | Lynchburg | VA | — | ◇ UNVERIFIED |
| GWGriffin Wheel Columbus Plant | Groveport | OH | — | ◇ UNVERIFIED |
| GCGunite Corporation | Rockford | IL | — | ◇ UNVERIFIED |
| HAHeat and Control, INC. | Union | MO | — | ◇ UNVERIFIED |
| HCHeat & Control | Galesburg | IL | — | ◇ UNVERIFIED |
| HCHeat & Control Mastermatic Div | Pembroke | NH | — | ◇ UNVERIFIED |
| HPHobart Plant 27 | Troy | OH | — | ◇ UNVERIFIED |
| HFHodge Foundry/greenville | Greenville | PA | — | ◇ UNVERIFIED |
| HFHycast Foundry LLC | Fairfield | IA | — | ◇ UNVERIFIED |
| HPHydril Premium Connections | Houston | TX | — | ◇ UNVERIFIED |
| ICId Castings Building Demolition | Noblesville | IN | — | ◇ UNVERIFIED |
| IPIngersoll-dresser Pump CO | Hastings | NE | — | ◇ UNVERIFIED |
| JFJbt Foodtech | Sandusky | OH | — | ◇ UNVERIFIED |
| JPJbt Prime Equipment | Columbus | OH | — | ◇ UNVERIFIED |
| JWJbt Wolf-tec | Kingston | NY | — | ◇ UNVERIFIED |
| KCKansas Castings | Belle Plaine | KS | — | ◇ UNVERIFIED |
| KSKoppel Steel CORP Baytown Plant | Baytown | TX | — | ◇ UNVERIFIED |
| LNLenco, Nlc INC. | Jackson | MO | — | ◇ UNVERIFIED |
| LCLiberty Casting CO (0121010003) | Delaware | OH | — | ◇ UNVERIFIED |
| LSLone Star Casting & Machine Partners | Kilgore | TX | — | ◇ UNVERIFIED |
| 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 |
| MMMiddleby Marshall Holdings LLC Dba Nu-vu Food Service Systems | Menominee | MI | — | ◇ UNVERIFIED |
| MWMiller Welding & Mach Sandy Lick Plt | Brookville | PA | — | ◇ 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 |
| NANov Ameron Tulsa Pole Products Welding & Fabrication | Tulsa | OK | — | ◇ UNVERIFIED |
| NWN. Wasserstrom & Sons/ Amtekco Industries INC. (0125043113) | Columbus | OH | — | ◇ 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 |
| PPPerma Pipe - a Subsidary of Mfri, INC. | Lebanon | TN | — | ◇ 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 |
| RPRiley Power | Tyler | TX | — | ◇ UNVERIFIED |
| RIRomac Industries | Sultan | WA | — | ◇ UNVERIFIED |
| RIRotex INC. | Cincinnati | OH | — | ◇ UNVERIFIED |
| SESec Energy Products and Services LP | Houston | TX | — | ◇ UNVERIFIED |
| SCSelkirk CORP Heat-fab | Turners Falls | MA | — | ◇ UNVERIFIED |
| SNShaw Naptech INC | Clearfield | UT | — | ◇ UNVERIFIED |
 Sioux City Foundry CO | South Sioux City | NE | — | ◇ UNVERIFIED |
 Skyline Steel Llc-iuka | Iuka | MS | — | ◇ UNVERIFIED |
| SMSpinco Metal Products INC. | Newark | NY | — | ◇ UNVERIFIED |
| SMSprinkman Manufacturing | Elroy | WI | — | ◇ UNVERIFIED |
| SAStandard Alloys Port Arthur | Port Arthur | TX | — | ◇ UNVERIFIED |
| SIStar Iron Works | Big Run | PA | — | ◇ UNVERIFIED |
| SUStarpipe USA Dba Sp Foundry / Sp Foundry | South Coffeyville | OK | — | ◇ UNVERIFIED |
| SMSt. Marys Foundry INC. (0306010004) | Saint Marys | OH | — | ◇ UNVERIFIED |
| SGStork Gamco Incorporated | Gainesville | GA | — | ◇ UNVERIFIED |
| SPSullivan Palatek | Michigan City | IN | — | ◇ UNVERIFIED |
| TCTaylor Co- Division of Carrier Commercial Refrigeration INC | Rockton | IL | — | ◇ UNVERIFIED |
| TFTeam Fabricators Metal Fabrication | Port Arthur | TX | — | ◇ 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 |
| VUVam USA | Houston | TX | — | ◇ UNVERIFIED |
| VUVam USA LLC | Youngstown | OH | — | ◇ 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 |
| WMWheeling Machine Products Division | Pine Bluff | AR | — | ◇ UNVERIFIED |
