| HMHarding Machine Company Inc-harding Machine INC | East Liberty | OH | — | ◇ UNVERIFIED |
| HSHarford Systems | Aberdeen | MD | — | ◇ UNVERIFIED |
| HLHawkline LLC | Mount Orab | OH | — | ◇ UNVERIFIED |
| HHHayes Heat Treating | Cranston | RI | — | ◇ UNVERIFIED |
| HSHazelett Strip-casting | Colchester | VT | — | ◇ UNVERIFIED |
| HCHeat & Control | Galesburg | IL | — | ◇ UNVERIFIED |
| HCHeat & Control Mastermatic Div | Pembroke | NH | — | ◇ UNVERIFIED |
| HEHeat Exchanger Faclty Galvanizing Plt | Catoosa | OK | — | ◇ UNVERIFIED |
| HSH&h Swiss Screw Machine Products CO | Hillside | NJ | — | ◇ UNVERIFIED |
| HCHi-tech Coatings INC | Warren | MI | — | ◇ UNVERIFIED |
| HMH & M Plating Company | Houston | TX | — | ◇ UNVERIFIED |
| HPHobart Plant 27 | Troy | OH | — | ◇ UNVERIFIED |
| HMHogan Manufacturing, INC | Escalon | CA | — | ◇ UNVERIFIED |
| H1Holland 1916 North Kansas City | North Kansas City | MO | — | ◇ UNVERIFIED |
| HPHouston Plating | South Houston | TX | — | ◇ UNVERIFIED |
| HCHowell Cnc and Machine | Lewiston | ID | — | ◇ UNVERIFIED |
| HCHowmet Castings | Winsted | CT | — | ◇ UNVERIFIED |
| HIHtt INC | Sheboygan Falls | WI | — | ◇ UNVERIFIED |
| HWHubbell - Wiegmann | Freeburg | IL | — | ◇ UNVERIFIED |
| HMHudapack Metal Treating of Illinois INC | Glendale Heights | IL | — | ◇ UNVERIFIED |
| HFHumburg Finishing Works INC | Hamburg | NY | — | ◇ UNVERIFIED |
| HEHunting Energy Service, INC. | Broussard | LA | — | ◇ UNVERIFIED |
| HEHunting Energy Services INC - Schriever Facility | Schriever | LA | — | ◇ UNVERIFIED |
| HIHypertherm INC | Lebanon | NH | — | ◇ UNVERIFIED |
 Hypertherm, INC. | Lebanon | NH | — | ◇ UNVERIFIED |
| IIIcp Industries Stockdale | Stockdale | TX | — | ◇ UNVERIFIED |
| IIIcs INC. | Mcpherson | KS | — | ◇ UNVERIFIED |
| ICId Castings Building Demolition | Noblesville | IN | — | ◇ UNVERIFIED |
| ICIdeal Clamp Products Fka Tridon Products | Smyrna | TN | — | ◇ UNVERIFIED |
| IMIllinois Mpp CO | Du Quoin | IL | — | ◇ UNVERIFIED |
| ISImperial Specialty INC | Pottstown | PA | — | ◇ UNVERIFIED |
| IEIndustrial Engraving | Pulaski | WI | — | ◇ UNVERIFIED |
| IGIndustrial Galvanizers America INC | Steele | AL | — | ◇ UNVERIFIED |
| IGIndustrial Galvanizers Miami | Miami | FL | — | ◇ UNVERIFIED |
| ISIndustrial Steel Treat CO | Jackson | MI | — | ◇ UNVERIFIED |
| IPIngersoll-dresser Pump CO | Hastings | NE | — | ◇ UNVERIFIED |
| IKInternational Knife & Saw Incorporated | Florence | SC | — | ◇ UNVERIFIED |
| ISIpc St Louis-ipc St Louis | Saint Louis | MO | — | ◇ UNVERIFIED |
| IPIseli Precision LLC. | Walworth | WI | — | ◇ UNVERIFIED |
| IIIsf (dba Infinitech Surface Finishing) | Wichita | KS | — | ◇ UNVERIFIED |
| IRItw Ramset Red Head | Paris | KY | — | ◇ UNVERIFIED |
| IIIwm International, LLC - Wire Facility | York | PA | — | ◇ UNVERIFIED |
| JFJbt Foodtech | Sandusky | OH | — | ◇ UNVERIFIED |
| JEJ E Adams Industries LTD | Cedar Rapids | IA | — | ◇ UNVERIFIED |
| JMJessen Manufacturing CO INC | Elkhart | IN | — | ◇ UNVERIFIED |
| JDJohn Deere Turf Care | Fuquay Varina | NC | — | ◇ UNVERIFIED |
 Johns Manville | Tucson | AZ | — | ◇ UNVERIFIED |
| JCJohnson Controls INC - East York Facility | York | PA | — | ◇ UNVERIFIED |
| JRJordan River Galvanizing, INC. | West Jordan | UT | — | ◇ UNVERIFIED |
| JGJoy Global-solon Operations | Solon | OH | — | ◇ UNVERIFIED |
| KMKaddis Manufacturing CORP | Rochester | NY | — | ◇ UNVERIFIED |
| KIKaliburn INC | Ladson | SC | — | ◇ UNVERIFIED |
| KCKbp Coil Coaters INC - 3600 E 44th Ave | Denver | CO | — | ◇ UNVERIFIED |
| KCK C Jones Plating CO Div of Chemetco | Hazel Park | MI | — | ◇ UNVERIFIED |
| KIKennametal Incorporated | New Albany | IN | — | ◇ UNVERIFIED |
| KIKepco INC | Vicksburg | MI | — | ◇ UNVERIFIED |
| KAKeystone Automotive Industries INC | Brainerd | MN | — | ◇ UNVERIFIED |
| KRKeystone Rustproofing INC | Arnold | PA | — | ◇ UNVERIFIED |
| KIKidron INC | Dalton | OH | — | ◇ UNVERIFIED |
| KKiswire | Newberry | SC | — | ◇ UNVERIFIED |
| KFK&j Finishing INC | Rockford | IL | — | ◇ UNVERIFIED |
| KSK&k Screw Products LLC | East China | MI | — | ◇ UNVERIFIED |
| KMKloeckner Metals Corporation | Louisville | MS | — | ◇ UNVERIFIED |
| KVKnape & Vogt Mfg CO | Grand Rapids | MI | — | ◇ UNVERIFIED |
| KBKocher + Beck USA LP | Lenexa | KS | — | ◇ UNVERIFIED |
| KBKoyo Bearings USA LLC | Walhalla | SC | — | ◇ UNVERIFIED |
| KGKt Galvanizing Katy | Katy | TX | — | ◇ UNVERIFIED |
| L3L 3 Communications Incorporated | Salt Lake City | UT | — | ◇ UNVERIFIED |
| LRLamb & Ritchie | Saugus | MA | — | ◇ UNVERIFIED |
| LPLeonhardt Plating CO. | Cincinnati | OH | — | ◇ UNVERIFIED |
| LHL & H Threaded Rods CORP | Dayton | OH | — | ◇ UNVERIFIED |
| LLinamar | Arden | NC | — | ◇ UNVERIFIED |
| LSLinamar Structures USA | Southfield | MI | — | ◇ UNVERIFIED |
| LILincoln Industries of Wisconsin LLC | New Berlin | WI | — | ◇ UNVERIFIED |
| LALinde Advanced Material Technologies INC | North Haven | CT | — | ◇ UNVERIFIED |
| LCLiverpool Coil Processing | Valley City | OH | — | ◇ UNVERIFIED |
| LOLogan Oil Tools, INC. | Houston | TX | — | ◇ UNVERIFIED |
| LSLone Star Heat Treating CO LTD | Houston | TX | — | ◇ UNVERIFIED |
| LTLuverne Truck Equipment INC | Brandon | SD | — | ◇ UNVERIFIED |
| LTL.v. Thompson, INC. (tamco) | Tampa | FL | — | ◇ UNVERIFIED |
| MSMaca Supply CO | Springville | UT | — | ◇ UNVERIFIED |
| MCMaclean-fogg Component Systems | Mundelein | IL | — | ◇ UNVERIFIED |
| MHMa Harrison Mfg CO INC | Birmingham | OH | — | ◇ UNVERIFIED |
| MRMajor Reflector Products | Northbrook | IL | — | ◇ UNVERIFIED |
| MSManion Steel Barrel | Oil City | PA | — | ◇ UNVERIFIED |
| MIManth-brownell INC | Sullivan | NY | — | ◇ UNVERIFIED |
| MMMarine Mechanical CORP | Cleveland | OH | — | ◇ UNVERIFIED |
| MPMartin Petersen CO INC | Kenosha | WI | — | ◇ UNVERIFIED |
| MFMaster Finish | Grand Rapids | MI | — | ◇ UNVERIFIED |
| MMMatcor Metal Fabrication | Morton | IL | — | ◇ UNVERIFIED |
| MSMatrix Service Fabrication Div | Catoosa | OK | — | ◇ UNVERIFIED |
| MIMcip Industrial Enterprises | Pearland | TX | — | ◇ UNVERIFIED |
| MPMckay Plating CO | Hampton | IL | — | ◇ UNVERIFIED |
| MGMechanical Galv-plating CORP | Sidney | OH | — | ◇ UNVERIFIED |
| MMMeminger Metal Finishing INC | Aledo | IL | — | ◇ UNVERIFIED |
| MTMerritt Tool CO INC - Triumph Structures East Texas | Kilgore | TX | — | ◇ UNVERIFIED |
| MIMetal Industries LLC | Bushnell | FL | — | ◇ UNVERIFIED |
| MGMetalplate Galvanizing INC | Atlanta | GA | — | ◇ UNVERIFIED |
| MGMetalplate Galvanizing LP | Birmingham | AL | — | ◇ UNVERIFIED |
| MGMetalplate Galvanizing, L.p. (plant No. 2) | Birmingham | AL | — | ◇ UNVERIFIED |
