| HPHarris Products Group | Carthage | TN | — | ◇ UNVERIFIED |
| HWHasse & Wrede North America | North Aurora | IL | — | ◇ UNVERIFIED |
| HAHealy Awards INC | Menomonee Falls | WI | — | ◇ UNVERIFIED |
| HIHeatron, INC. (200 Commercial St.) (stormwater) | Leavenworth | KS | — | ◇ UNVERIFIED |
| HIHeatron, INC. (3000 Wilson Ave.) (stormwater) | Leavenworth | KS | — | ◇ UNVERIFIED |
| HTHeat Treating Services CORP of America - Plant 1 | Pontiac | MI | — | ◇ UNVERIFIED |
| HIHelgesen Industries INC | Hartford | WI | — | ◇ UNVERIFIED |
| HCHertz Corporation | San Francisco | CA | — | ◇ UNVERIFIED |
| HHHired Hand Green | Bremen | AL | — | ◇ UNVERIFIED |
| HMHitachi Magnetics CORP | Edmore | MI | — | ◇ UNVERIFIED |
| HMHitech Metal Fabrication | Anaheim | CA | — | ◇ UNVERIFIED |
| HTHi Tec Metal Group INC - Hydrovac | Cleveland | OH | — | ◇ UNVERIFIED |
| HTHi Tecmetal, INC. Bmt (1318007817) | Cleveland | OH | — | ◇ UNVERIFIED |
| HFHl Fisher Mfg CO INC | Des Plaines | IL | — | ◇ UNVERIFIED |
| HMH & M Metal Processing | Akron | OH | — | ◇ UNVERIFIED |
| HNHoffman New Yorker/dushore Facility | Dushore | PA | — | ◇ UNVERIFIED |
| HMHol Mac Corporation, South | Bay Springs | MS | — | ◇ UNVERIFIED |
| HHHoosier Horse Trailers, LLC | Syracuse | IN | — | ◇ UNVERIFIED |
| HOHouse of Beauregard | Nashville | TN | — | ◇ UNVERIFIED |
| HEH&s Enterprises INC | Monrovia | CA | — | ◇ UNVERIFIED |
| HTH T I | Logansport | IN | — | ◇ UNVERIFIED |
| HPHuhtamaki Plastics Phoenix | Phoenix | AZ | — | ◇ UNVERIFIED |
| HLHull Lift Truck INC | Elkhart | IN | — | ◇ UNVERIFIED |
| HYHunt Yachts | Bristol | RI | — | ◇ UNVERIFIED |
| HEHuss Equipment CORP. | Bowling Green | OH | — | ◇ UNVERIFIED |
| IMIce Manufacturing INC | Oelwein | IA | — | ◇ UNVERIFIED |
| IIIlpea Industries Inc/kane | Kane | PA | — | ◇ UNVERIFIED |
| IGImperial Group-decatur | Decatur | TX | — | ◇ UNVERIFIED |
| IDImt Duncan LLC | Duncan | SC | — | ◇ UNVERIFIED |
| ISInduction Services Inc-warren | Warren | MI | — | ◇ UNVERIFIED |
| IBIndustrial Brush CORP | Lakeland | FL | — | ◇ UNVERIFIED |
| IHIndustrial Heat Treating | Indianapolis | IN | — | ◇ UNVERIFIED |
| IHIndustrial Heat Treating INC | Quincy | MA | — | ◇ UNVERIFIED |
| ITIndustrial Tooling & Fabrication | Fort Madison | IA | — | ◇ UNVERIFIED |
| INInland Nw Metallurgical Svs INC | Spokane | WA | — | ◇ UNVERIFIED |
| IMInnovative Membrane Systems | Norwood | MA | — | ◇ UNVERIFIED |
| ITInta Technologies CORP | Santa Clara | CA | — | ◇ UNVERIFIED |
| IDInternational Diamond Services | Houston | TX | — | ◇ UNVERIFIED |
| IMInternational Mill Service | Claymont | DE | — | ◇ UNVERIFIED |
| ISInternational Supply CO | Edelstein | IL | — | ◇ UNVERIFIED |
| ILIonbond LLC | Madison Heights | MI | — | ◇ UNVERIFIED |
| ILIowa Laser Technology | Cedar Falls | IA | — | ◇ UNVERIFIED |
| IHIronbound Heat Treating CO | Roselle | NJ | — | ◇ UNVERIFIED |
| JJabil | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| JHJ H Smith CO INC | Greenfield | MA | — | ◇ UNVERIFIED |
| JJJ & J Wehner Inc, Dba H & L Plating & Gr | Muncie | IN | — | ◇ UNVERIFIED |
| JKJ Kittredge & Sons INC | Hudson | MA | — | ◇ UNVERIFIED |
| JEJohn Epler Company | Lowell | OH | — | ◇ UNVERIFIED |
| JJJohnson & Johnston Associates INC | Hampstead | NH | — | ◇ UNVERIFIED |
| JFJohnston Family Enterprise INC | Henderson | KY | — | ◇ UNVERIFIED |
| JLJones & Lamson Vermont CORP | Springfield | VT | — | ◇ UNVERIFIED |
| JCJordan & CO LLC | Carlsbad | CA | — | ◇ UNVERIFIED |
| JMJoslyn Manufacturing CO | Chicago | IL | — | ◇ UNVERIFIED |
| JMJust Manufacturing, LLC (f/k/a Zurn Acquisition, Llc) | Franklin Park | IL | — | ◇ UNVERIFIED |
| KIKalumetals INC -derry Facility | Derry | PA | — | ◇ UNVERIFIED |
| KMKayline Mfg | Denver | CO | — | ◇ UNVERIFIED |
| K2Kelly 24 #1 Production Facility | Sugartown | LA | — | ◇ UNVERIFIED |
| KKelpro | Sikeston | MO | — | ◇ UNVERIFIED |
| KSKenney Steel Treating CORP | Kearny | NJ | — | ◇ UNVERIFIED |
| KIKenowa Industries | Holland | MI | — | ◇ UNVERIFIED |
| KIKessler Industries | El Paso | TX | — | ◇ UNVERIFIED |
| KHKh Huppert CO | South Holland | IL | — | ◇ UNVERIFIED |
| KMKim Manufacturing CO | Downingtown | PA | — | ◇ UNVERIFIED |
| KEKitchen Equipment Fabricating Dba Counter Craft | Houston | TX | — | ◇ UNVERIFIED |
| KMKloeckner Metals CORP. | Nashville | TN | — | ◇ UNVERIFIED |
| KIKloehn INC | Las Vegas | NV | — | ◇ UNVERIFIED |
| KCKloppenberg & CO | Sheridan | CO | — | ◇ UNVERIFIED |
| KFKme Fire Apparatus | Roanoke | VA | — | ◇ UNVERIFIED |
| KMK M Machine CO | Biscoe | NC | — | ◇ UNVERIFIED |
| KGKnight Global | Auburn Hills | MI | — | ◇ UNVERIFIED |
| KFKory Farm Equipment LLC | Manlius | IL | — | ◇ UNVERIFIED |
| LTLakeside Tech Solutions LLC | Monroe City | MO | — | ◇ UNVERIFIED |
| LSLapham-hickey Steel Corporation | Oshkosh | WI | — | ◇ UNVERIFIED |
| LBL & B Products CORP | Hudson | NY | — | ◇ UNVERIFIED |
| LTLeed Thermal Processing Incorporated | Indianapolis | IN | — | ◇ UNVERIFIED |
| LILee Iron & Metal CO INC | Sanford | NC | — | ◇ UNVERIFIED |
| LTLh Thompson Steel LLC | Paulding | OH | — | ◇ UNVERIFIED |
| LHLiberty Heat Treating CO INC | Ozone Park | NY | — | ◇ UNVERIFIED |
| LLightolier | Wilmington | MA | — | ◇ UNVERIFIED |
| LHLindberg Heat Treating | Boston | MA | — | ◇ UNVERIFIED |
 Lippert Components INC. 83 | Elkhart | IN | — | ◇ UNVERIFIED |
| Lippert Components Manufacturing, INC. | White Pigeon | MI | — | ◇ UNVERIFIED |
| LMLmi Manufacturing Holdings LLC | Allenton | WI | — | ◇ UNVERIFIED |
| LMLockheed Martin | Akron | OH | — | ◇ UNVERIFIED |
| LALoral Aeronutronic | Newport Beach | CA | — | ◇ UNVERIFIED |
| LCLoren Cook Co-barnes St Plant | Springfield | MO | — | ◇ UNVERIFIED |
| LPLoren Products | Lawrence | MA | — | ◇ UNVERIFIED |
| LMLoughberry Manufacturing Corporation | Saratoga Springs | NY | — | ◇ UNVERIFIED |
| LTLucent Technologies Nassau Metals | Staten Island | NY | — | ◇ UNVERIFIED |
| MGMaple Grove Tower Site | Maple Grove | MN | — | ◇ UNVERIFIED |
| MTMapp Technologies, L.l.c. | Joplin | MO | — | ◇ UNVERIFIED |
| MPMarch Performance INC | Naples | FL | — | ◇ UNVERIFIED |
| MPMarion Process Solutions | Marion | IA | — | ◇ UNVERIFIED |
| MVMark Vii Equipment Incorporated | Arvada | CO | — | ◇ UNVERIFIED |
| MTMatco Tools | Lakewood | NY | — | ◇ UNVERIFIED |
| MDMaterials Developement Corporation | Medford | MA | — | ◇ UNVERIFIED |
| MTMaterials Technology INC | Somerset | NJ | — | ◇ UNVERIFIED |
| MBMaterion Brush INC | Fremont | CA | — | ◇ UNVERIFIED |
| MMMathy Machine INC | Santee | CA | — | ◇ UNVERIFIED |
 Matrix Machine and Repair INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
