| GMGladding Mc Bean Lincoln Clay Products | Lincoln | CA | — | ◇ UNVERIFIED |
| GTGlass to Glass | Portland | OR | — | ◇ UNVERIFIED |
| GCGleason Clay Company, LLC | Gleason | TN | — | ◇ UNVERIFIED |
| GRGleason Roll Off & Recycling INC | Racine | WI | — | ◇ UNVERIFIED |
| GNGlenbrook Nickel Company | Riddle | OR | — | ◇ UNVERIFIED |
| GRGlencore Recycling | East Providence | RI | — | ◇ UNVERIFIED |
| GPGlendon Pyrophyllite, INC. - Mine Site | Glendon | NC | — | ◇ UNVERIFIED |
| GHGlenn Hunter & Associates | Delta | OH | — | ◇ UNVERIFIED |
| GAGlobal Advanced Metals | Gilbertsville | PA | — | ◇ UNVERIFIED |
| GFGlobal Fiberglass Solutions of Texas | Sweetwater | TX | — | ◇ UNVERIFIED |
 Global Tungsten & Powders Llc/hawes Street Plt | Towanda | PA | — | ◇ UNVERIFIED |
| GAGlueck's Auto Parts INC | Osprey | FL | — | ◇ UNVERIFIED |
| GCGolden City Foundry Inc-golden City Foundry INC | Golden City | MO | — | ◇ UNVERIFIED |
| GMGold Metal Recyclers | Dallas | TX | — | ◇ UNVERIFIED |
| GIGoldtech, INC. | San Jose | CA | — | ◇ UNVERIFIED |
 Gopher Resource Llc- State Special Waste Facility | Eagan | MN | — | ◇ UNVERIFIED |
| GIGottlieb INC | Neville Island | PA | — | ◇ UNVERIFIED |
| GIGould INC | Omaha | NE | — | ◇ UNVERIFIED |
| GIGrede Ii LLC Marion | Marion | AL | — | ◇ UNVERIFIED |
| GIGrede Ii - Selma | Selma | AL | — | ◇ UNVERIFIED |
| GLGreene Lyon Metals LLC | Jackson | OH | — | ◇ UNVERIFIED |
| GRGreenville Recycling Ii LLC | Greenville | KY | — | ◇ UNVERIFIED |
| GRGreenway Recycling Services | Pasadena | TX | — | ◇ UNVERIFIED |
| GAGrooms Aluminum Recycling | Ashville | AL | — | ◇ UNVERIFIED |
| GCGulf Chem & Met | Freeport | TX | — | ◇ UNVERIFIED |
| HEHalaco Engineering Company | Oxnard | CA | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services INC | Crescent Valley | NV | — | ◇ UNVERIFIED |
| HHHandy & Hartman LTD. | White Plains | NY | — | ◇ UNVERIFIED |
| HAHanson Aggregates Sandy Flats Quarry | Taylors | SC | — | ◇ UNVERIFIED |
| HSHanson Slag Cement INC | Cape Canaveral | FL | — | ◇ UNVERIFIED |
| HWHarbison Walker Refractories CO | Ludington | MI | — | ◇ UNVERIFIED |
| HEHardcast Enterprises INC | Lancaster | CA | — | ◇ UNVERIFIED |
| HMHarding Metals | Northwood | NH | — | ◇ UNVERIFIED |
| HPHardware Parts Corporation | Boca Raton | FL | — | ◇ UNVERIFIED |
| HHarsco | Cofield | NC | — | ◇ UNVERIFIED |
| HCHarsco CO Heckett Multiserv Plant 16 | Butler | PA | — | ◇ UNVERIFIED |
| HCHarsco CO Heckett Multiserv Plant 49 | Blytheville | AR | — | ◇ UNVERIFIED |
| HCHarsco CO Heckett Multiserv Plant 54 | Blytheville | AR | — | ◇ UNVERIFIED |
| HCHarsco CORP. | La Cygne | KS | — | ◇ UNVERIFIED |
| HCHarsco Corporation | Calvert | AL | — | ◇ UNVERIFIED |
| HCHarsco Corporation | Pawnee | IL | — | ◇ UNVERIFIED |
| HCHarsco Corporation Dba Harsco Metals & Minerals | Cofield | NC | — | ◇ UNVERIFIED |
| HMHarsco Metals - Coatesville | Coatesville | PA | — | ◇ UNVERIFIED |
| HMHarsco Metals - Cofield Facility | Cofield | NC | — | ◇ UNVERIFIED |
| HMHarsco Metals - Gallatin | Ghent | KY | — | ◇ UNVERIFIED |
| HMHarsco Metals - Ihw | East Chicago | IN | — | ◇ UNVERIFIED |
| HMHarsco Metals Midland | Midland | PA | — | ◇ UNVERIFIED |
| HMHarsco Metals - Natrona Facility - Gate 10 | Natrona Heights | PA | — | ◇ UNVERIFIED |
| HMHarsco Metals/ Plt 53 | Koppel | PA | — | ◇ UNVERIFIED |
| HMHarsco Metals - Warren | Warren | OH | — | ◇ UNVERIFIED |
| HMHarsco Minerals | Drakesboro | KY | — | ◇ UNVERIFIED |
| HMHarsco Multiserv Plant 69 | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| HRHarsco - Reed Minerals Division | Gary | IN | — | ◇ UNVERIFIED |
| HHHarso Heckett Multiserv Plant 67 | Pueblo | CO | — | ◇ UNVERIFIED |
| HRHawaiian Rock Products | Sinajana | GU | — | ◇ UNVERIFIED |
| HSHc Starck INC | Newton | MA | — | ◇ UNVERIFIED |
| HIHd Industries | Detroit | MI | — | ◇ UNVERIFIED |
| HMHeckett Multiserv | Butler | KY | — | ◇ UNVERIFIED |
| HMHeckett Multiserv Plant 18 a Harsco Company | Steelton | PA | — | ◇ UNVERIFIED |
| HMHeckett Multiserv Plt 23 | Owensboro | KY | — | ◇ UNVERIFIED |
| HPHeckett Plant #21 | Natrona Heights | PA | — | ◇ UNVERIFIED |
| HMHeidelberg Materials Ne Llc/rich Hill Quarry | Connellsville | PA | — | ◇ UNVERIFIED |
| HMHeidelberg Materials Ne Llc/rich Hill Quarry | Connellsville | PA | — | ◇ UNVERIFIED |
| HSHemlock Semiconductor, L.l.c. | Clarksville | TN | — | ◇ UNVERIFIED |
| HIHeraeus INC | Newark | NJ | — | ◇ UNVERIFIED |
| HLHerculaneum - Lead Smelter Site | Herculaneum | MO | — | ◇ UNVERIFIED |
| HSHeritage Slag Products, LLC (gary) | Gary | IN | — | ◇ UNVERIFIED |
| HPHero Protective Alloys INC | Fairfield | CA | — | ◇ UNVERIFIED |
| HSHidalgo Smelter | Hachita | NM | — | ◇ UNVERIFIED |
| HPHi-tech Precious Metals & Refinery LLC | Dallas | TX | — | ◇ UNVERIFIED |
| HIHolcim Incorporated | Birmingham | AL | — | ◇ UNVERIFIED |
| HIHolcim (us) INC | Weirton | WV | — | ◇ UNVERIFIED |
| HWHolland Weights LLC | Dayton | KY | — | ◇ UNVERIFIED |
| HMHomogeneous Metals INC Hmi Facility Formerly | Herkimer | NY | — | ◇ UNVERIFIED |
| HCHorsehead Corp/bartlesville Div | Bartlesville | OK | — | ◇ UNVERIFIED |
| HZHorsehead Zinc Powders LLC | Monaca | PA | — | ◇ UNVERIFIED |
| HSH & S Metals | North Manchester | IN | — | ◇ UNVERIFIED |
| HAHuntington Aluminum INC | Huntington | IN | — | ◇ UNVERIFIED |
| HLHvf LLC | Alexandria | AL | — | ◇ UNVERIFIED |
| HAHydro Aluminum Metals Usa, LLC | Cassopolis | MI | — | ◇ UNVERIFIED |
| HEHydro-dyne Engineering | Clearwater | FL | — | ◇ UNVERIFIED |
| IDIcmi/nukote Dunbar Plt | Connellsville | PA | — | ◇ UNVERIFIED |
| IMIdaho Minerals, L.l.c. | Malad City | ID | — | ◇ UNVERIFIED |
| IMIdarado Mine | Ouray, 5.1 Mi S of | CO | — | ◇ UNVERIFIED |
| IMIdeal Metal and Salvage CO | Gardena | CA | — | ◇ UNVERIFIED |
| IHI H Schlezinger INC | Columbus | OH | — | ◇ UNVERIFIED |
| IRImco Recycling of Illinois Inc-sikeston | Sikeston | MO | — | ◇ UNVERIFIED |
| IRImco Recycling of Indiana | Bedford | IN | — | ◇ UNVERIFIED |
| IGImerys Greeneville, INC. | Greeneville | TN | — | ◇ UNVERIFIED |
| IOImerys Oilfield Solutions | Wrens | GA | — | ◇ UNVERIFIED |
| IPImerys Perlite USA | Escondido | CA | — | ◇ UNVERIFIED |
| IPImerys Perlite Usa, INC | Quincy | FL | — | ◇ UNVERIFIED |
| IPImerys Perlite Usa, INC. | Klamath Falls | OR | — | ◇ UNVERIFIED |
| IPImerys Perlite Usa, INC. | Lake Wales | FL | — | ◇ UNVERIFIED |
| ISImerys Sandersville Calcine Plant | Sandersville | GA | — | ◇ UNVERIFIED |
| IIInaweld INC. | Hialeah | FL | — | ◇ UNVERIFIED |
| IMIndustrial Minerals | Kings Creek | SC | — | ◇ UNVERIFIED |
| IPIndustrial Precious Metals LLC | Wallingford | CT | — | ◇ UNVERIFIED |
| IInmetco | Ellwood City | PA | — | ◇ UNVERIFIED |
| IRInnovative Response Technoligies | Fairmont | WV | — | ◇ UNVERIFIED |
