| HCHenry Camosse and Son | Worcester | MA | — | ◇ UNVERIFIED |
| HWHickman Williams & Company | Etna | PA | — | ◇ UNVERIFIED |
| HMHitchiner Mfg CO INC | Littleton | NH | — | ◇ UNVERIFIED |
| HCHoeganaes Corporation-riverton | Cinnaminson | NJ | — | ◇ UNVERIFIED |
| HRHolbrook Ready Mix INC. | Selma | AL | — | ◇ UNVERIFIED |
| HRHoover Ready Mix | Madison | TN | — | ◇ UNVERIFIED |
| HTHovey Tile Art | Mentone | CA | — | ◇ UNVERIFIED |
| HSHsk Stainless, LLC | Gallatin | TN | — | ◇ UNVERIFIED |
| HHudson-denton | Hudson | FL | — | ◇ UNVERIFIED |
| HLHybar LLC | Osceola | AR | — | ◇ UNVERIFIED |
| HCHydro Conduit, LLC Dba Rinker Materials | Miami | FL | — | ◇ UNVERIFIED |
| IBIbc Block Mfg LLC | Champaign | IL | — | ◇ UNVERIFIED |
| IKIce Krackers, INC. | Springfield | IL | — | ◇ UNVERIFIED |
| ISIdaho Steel Products, INC. | Caldwell | ID | — | ◇ UNVERIFIED |
| ICIdeal Concrete Block Company, INC. | Westford | MA | — | ◇ UNVERIFIED |
| ISIdeal Stainless, INC | Springfield | MO | — | ◇ UNVERIFIED |
| IFIllinois Fabricators INC | Bradley | IL | — | ◇ UNVERIFIED |
| IWIllinois Weld & Machine, INC. | Hanna City | IL | — | ◇ UNVERIFIED |
| IBInnovative Block Plant | La Feria | TX | — | ◇ UNVERIFIED |
| ITInnovative Technology & Materials INC | Chicago | IL | — | ◇ UNVERIFIED |
| ISIn Stainless Steel Specialist | Hampden | ME | — | ◇ UNVERIFIED |
| ICInterlock Concrete Products, INC. | Jordan | MN | — | ◇ UNVERIFIED |
| IKIpsco Koppel Tubulars Llc/koppel Plt | Koppel | PA | — | ◇ UNVERIFIED |
| IEIronton Enterprises LLC | West Paducah | KY | — | ◇ UNVERIFIED |
| ILIronunits LLC - Toledo Hbi (0448011992) | Toledo | OH | — | ◇ UNVERIFIED |
| JSJacksonsonville South Mfg | Jacksonville | FL | — | ◇ UNVERIFIED |
| JCJavier Chavez Valencia | Waterford | CA | — | ◇ UNVERIFIED |
| JGJ&E Grill Mfg., LLC | New Holland | PA | — | ◇ UNVERIFIED |
| JHJericho Holdings, LLC | Kinston | NC | — | ◇ UNVERIFIED |
| JCJerry's Concrete Pumping Service LLC | Lithia | FL | — | ◇ UNVERIFIED |
| JEJesus Ernesto Velasquez & Rosa Maria Velasquez, Indivdually and Jointly | San Marcos | CA | — | ◇ UNVERIFIED |
| JAJewel Acquisition LLC | Louisville | OH | — | ◇ UNVERIFIED |
| JCJewell Coke Company | Oakwood | VA | — | ◇ UNVERIFIED |
| JWJewell Waco Site | Waco | TX | — | ◇ UNVERIFIED |
| JGJ.f. Gillespie, INC. | Vineland | NJ | — | ◇ UNVERIFIED |
| JPJms Processing INC | Blytheville | AR | — | ◇ UNVERIFIED |
| JPJms Property Improvements | Armorel | AR | — | ◇ UNVERIFIED |
| JBJohns Building Supply CO. INC. | Cheshire | MA | — | ◇ UNVERIFIED |
| JCJohnson Concrete Co-eastern | Willow Springs | NC | — | ◇ UNVERIFIED |
| JCJohnson Concrete Company | Willow Spring | NC | — | ◇ UNVERIFIED |
| JCJohnson Concrete Company | Lexington | NC | — | ◇ UNVERIFIED |
| JPJoliet Public Scrap Metal Recycling Yard | Joliet | IL | — | ◇ UNVERIFIED |
| JSJoplin Stoneworks LLC | Duenweg | MO | — | ◇ UNVERIFIED |
| JMJoseph Mining CO | Mcdowell | KY | — | ◇ UNVERIFIED |
| JSJsw Steel Holding (usa), INC. | Baytown | TX | — | ◇ UNVERIFIED |
| JSJsw Steel USA Ohio, INC. | Mingo Junction | OH | — | ◇ UNVERIFIED |
| JWJ. W. Kelso Company, INC. | Galveston | TX | — | ◇ UNVERIFIED |
| KCKasten Concrete Products | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| KMKast Marble | Colorado Springs | CO | — | ◇ UNVERIFIED |
| KSKatelman Steel Fabrication INC | Council Bluffs | IA | — | ◇ UNVERIFIED |
| KMKC Metal Worx, LLC | Kansas City | MO | — | ◇ UNVERIFIED |
| KSKdr Steel | Rialto | CA | — | ◇ UNVERIFIED |
| KIKellystone, INC. | Lake Charles | LA | — | ◇ UNVERIFIED |
| KRKentucky Roll Forming, LLC | Louisville | KY | — | ◇ UNVERIFIED |
| KBKeystone Bar Products INC | Chicago Heights | IL | — | ◇ UNVERIFIED |
| KCKeystone Concrete Block and Supply Company, INC. | Scranton | PA | — | ◇ UNVERIFIED |
| KCKeystone Concrete Block INC. | Clarks Summit | PA | — | ◇ UNVERIFIED |
| KSKgel Steel, INC | Riverside | CA | — | ◇ UNVERIFIED |
| KSKgs Steel, INC. | Nashville | TN | — | ◇ UNVERIFIED |
| KGKing General Contractors INC | Bristol | VA | — | ◇ UNVERIFIED |
| KCKirkpatrick Concrete,inc. Plant 13 | Birmingham | AL | — | ◇ UNVERIFIED |
| KNK. N. M. Industries, INC. | Harwood Heights | IL | — | ◇ UNVERIFIED |
| KIK.n.m. Industries, INC. Dba Lexco Cable | Norridge | IL | — | ◇ UNVERIFIED |
| KKoss #108 | North Little Rock | AR | — | ◇ UNVERIFIED |
| KSKurland Steel CO | Urbana | IL | — | ◇ UNVERIFIED |
| KCKwik Cutting & Grinding | Compton | CA | — | ◇ UNVERIFIED |
| KSKyoei Steel Group | Anthony | TX | — | ◇ UNVERIFIED |
| LQLa Quinta Plant | Portland | TX | — | ◇ UNVERIFIED |
| LCLargo Concrete | Colton | CA | — | ◇ UNVERIFIED |
| LILarry Iron Works INC. | Bronx | NY | — | ◇ UNVERIFIED |
| LCLarson Cement Stone CO | Omaha | NE | — | ◇ UNVERIFIED |
| LCLash Construction INC. | Santa Barbara | CA | — | ◇ UNVERIFIED |
| LMLasser Machine Shop LLC | Nogales | AZ | — | ◇ UNVERIFIED |
| LFLb Foster Company- Arp Plant | Pueblo | CO | — | ◇ UNVERIFIED |
| LBLee Brick & Block | Bowling Green | KY | — | ◇ UNVERIFIED |
| LMLee Masonry Products INC | Hopkinsville | KY | — | ◇ UNVERIFIED |
| LMLee Masonry Products INC | Bardstown | KY | — | ◇ UNVERIFIED |
| LMLee Masonry Products INC | Antioch | TN | — | ◇ UNVERIFIED |
| LMLee Masonry Products INC | Lexington | KY | — | ◇ UNVERIFIED |
| LMLee Masonry Products LLC | Bowling Green | KY | — | ◇ UNVERIFIED |
| LBLeonard Block Company | Winston Salem | NC | — | ◇ UNVERIFIED |
| LALeo's Automotive LLC | Littleton | CO | — | ◇ UNVERIFIED |
| LTLevy Texas Mill Services | Sinton | TX | — | ◇ UNVERIFIED |
| LSLexington Steel Corporation | Los Angeles | CA | — | ◇ UNVERIFIED |
| LSLiberty Steel Georgetown | Georgetown | SC | — | ◇ UNVERIFIED |
| LSLiberty Steel Laplace, INC. | Laplace | LA | — | ◇ UNVERIFIED |
| LBLightweight Block CO | Lynchburg | VA | — | ◇ UNVERIFIED |
| LBLightweight Block Lexington Corporation | Lexington | NC | — | ◇ UNVERIFIED |
| LSLinear Shower Drains, LLC | Ponte Vedra | FL | — | ◇ UNVERIFIED |
| LPLivonia Pre Cast LLC | Livonia | MI | — | ◇ UNVERIFIED |
| LLL.K. Lehman Trucking, Inc | Sonora | CA | — | ◇ UNVERIFIED |
| LCLoby Concrete Products CO | La Follette | TN | — | ◇ UNVERIFIED |
| LMLojac Materials INC | Lebanon | TN | — | ◇ UNVERIFIED |
| LPL P Mcnear Brick CO INC | San Rafael | CA | — | ◇ UNVERIFIED |
| MTMachmeyer - Tampa 36th Ave | Tampa | FL | — | ◇ UNVERIFIED |
| MAM. A. Concrete Const- 32.5 Rd Gravel Pit | Grand Junction Area | CO | — | ◇ UNVERIFIED |
| MWMansell Welding, INC. | Lk Havasu Cty | AZ | — | ◇ UNVERIFIED |
| MFManuel Flores Concrete Construction INC | Calexico | CA | — | ◇ UNVERIFIED |
| MLMarcaco LLC | Albany | NY | — | ◇ UNVERIFIED |
| MCMarshall Concrete Products INC | Hutchinson | MN | — | ◇ UNVERIFIED |
