| GCGunnison CO Asphalt | Gunnison | CO | — | ◇ UNVERIFIED |
| GAGwinnett Asphalt Terminal | Doraville | GA | — | ◇ UNVERIFIED |
| GWG W Paving INC | Hudson Falls | NY | — | ◇ UNVERIFIED |
| HMHac Materials, LTD. | Corpus Christi | TX | — | ◇ UNVERIFIED |
| HKHaines & Kibblehouse/dunmore Materials | Dunmore | PA | — | ◇ UNVERIFIED |
| HKHaines & Kibblehouse Locust Ridge Asphalt | Pocono Lake | PA | — | ◇ UNVERIFIED |
| HPHalifax Paving, INC. | Ormond Beach | FL | — | ◇ UNVERIFIED |
| HCHall Contracting of Kentucky Incorporated | Charlestown | IN | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services INC | Crescent Valley | NV | — | ◇ UNVERIFIED |
| HCHall-irwin CORP - Portable Blending Unit | Firestone | CO | — | ◇ UNVERIFIED |
| HEHammaker East Asphalt Emulsions | Greensboro | NC | — | ◇ UNVERIFIED |
| HEHammaker East - Chambersburg | Chambersburg | PA | — | ◇ UNVERIFIED |
| HEHammaker East, LTD Asphalt | Black Mountain | NC | — | ◇ UNVERIFIED |
| HAHamm Asphalt INC. | Portable | KS | — | ◇ UNVERIFIED |
| HQHamm Quarry INC | Perry | KS | — | ◇ UNVERIFIED |
| HPHanover Prest Paving Brick Plt | Hanover | PA | — | ◇ UNVERIFIED |
| HAHanson Aggregates | San Diego | CA | — | ◇ UNVERIFIED |
| HAHanson Aggregates | Walnut Creek | CA | — | ◇ UNVERIFIED |
| HAHanson Aggregates | Burnet | TX | — | ◇ UNVERIFIED |
| HAHanson Aggregates Arizona INC. | Mesa | AZ | — | ◇ UNVERIFIED |
| HAHanson Aggregates Bmc Sewickley Creek Plt | Sewickley | PA | — | ◇ UNVERIFIED |
| HAHanson Aggregates Mid-pacific INC | Santa Maria | CA | — | ◇ UNVERIFIED |
| HAHanson Aggregates Mid-pacific - Various | Santa Maria | CA | — | ◇ UNVERIFIED |
| HAHanson Aggregates Midwest, INC. (miller Quarry) | Lexington | IN | — | ◇ UNVERIFIED |
| HAHanson Aggregates/ottsville Quarry Asphalt Plts | Ottsville | PA | — | ◇ UNVERIFIED |
| HAHanson Aggregates Pacific Southwest | San Marcos | CA | — | ◇ UNVERIFIED |
| HAHanson Aggregates Pacific Southwest INC | Lakeside | CA | — | ◇ UNVERIFIED |
| HAHanson Aggregates Pacific Southwest INC | Carlsbad | CA | — | ◇ UNVERIFIED |
| HAHanson Aggregates Pa/lake Twp Asphalt Plt | Lake | PA | — | ◇ UNVERIFIED |
| HAHanson Aggregates Sandy Flats Quarry | Taylors | SC | — | ◇ UNVERIFIED |
| HAHanson Aggregates/ Stroudsburg Hma Plant | Stroudsburg | PA | — | ◇ UNVERIFIED |
| HAHanson Aggregates West INC | Oxnard | CA | — | ◇ UNVERIFIED |
| HAHanson Aggregrates Berkeley | Berkeley | CA | — | ◇ UNVERIFIED |
| HAHanson Aggregrates Bmc, INC. | Eighty Four | PA | — | ◇ UNVERIFIED |
| HSHanson Slag Cement INC | Cape Canaveral | FL | — | ◇ UNVERIFIED |
| HWHarbison Walker Refractories CO | Ludington | MI | — | ◇ UNVERIFIED |
| HCHardeman County Highway Department | Bolivar | TN | — | ◇ UNVERIFIED |
| HAHardrives Asphalt Company | Deerfield Beach | FL | — | ◇ UNVERIFIED |
| HAHardrives Asphalt Company | Delray Beach | FL | — | ◇ UNVERIFIED |
| HCHardrives Construction INC | Billings | MT | — | ◇ UNVERIFIED |
| HIHardrives INC | Lakeland | MN | — | ◇ UNVERIFIED |
| HIHardrives INC - Plant 701 | Waite Park | MN | — | ◇ UNVERIFIED |
| HRHard Rock Paving & Redimix INC | Buena Vista | CO | — | ◇ UNVERIFIED |
| HCHardy Construction | Prescott | AR | — | ◇ UNVERIFIED |
| HPHarlan Plant # 19 | Bledsoe | KY | — | ◇ UNVERIFIED |
| HMHarleysville Materials/lower Salford | Harleysville | PA | — | ◇ UNVERIFIED |
| HMHarold Macquinn | Hancock | ME | — | ◇ UNVERIFIED |
| HAHarrison, Apac-atlantic, Rhodes Plant-franklin | Franklin | NC | — | ◇ UNVERIFIED |
| HCHarrison Construction Division of Apac- | Dillsboro | NC | — | ◇ UNVERIFIED |
| HCHarrison Construction Division of Apac-atlantic, INC. | Waynesville | NC | — | ◇ UNVERIFIED |
| HCHarrison Construction Divison of Apac-te | Franklin | NC | — | ◇ UNVERIFIED |
| HCHarrison Construction Divison of Apac-te | Murphy | NC | — | ◇ UNVERIFIED |
| HCHarry C. Crooker & Sons | Topsham | ME | — | ◇ UNVERIFIED |
| HWHarry W Kuhn INC | Bolingbrook | IL | — | ◇ 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 | Pawnee | IL | — | ◇ UNVERIFIED |
| HCHarsco Corporation | Calvert | AL | — | ◇ 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 |
| HCHart County Stone INC | Glasgow | KY | — | ◇ UNVERIFIED |
| HLHaskell Lemon Construction CO / Shawnee Plant | Shawnee | OK | — | ◇ UNVERIFIED |
| HRHawaiian Rock Products | Sinajana | GU | — | ◇ UNVERIFIED |
| HRHawbaker Recycling Center Stormwater Pag-03 | State College | PA | — | ◇ UNVERIFIED |
| HAHawkins Asphalt Paving, LLC | Woodbury | TN | — | ◇ UNVERIFIED |
| HCHawkinson Construction CO | Grand Rapids | MN | — | ◇ UNVERIFIED |
| HMHaydon Materials LLC - Lebanon Quarry | Lebanon | KY | — | ◇ UNVERIFIED |
| HDH & D INC | Gaylord | MI | — | ◇ UNVERIFIED |
| HDH & D INC | Levering | MI | — | ◇ UNVERIFIED |
| HDH & D INC | Alba | MI | — | ◇ UNVERIFIED |
| HDH & D INC - Bayshore | Bay Shore | MI | — | ◇ UNVERIFIED |
| HIHead INC | Columbus | OH | — | ◇ UNVERIFIED |
| HIHead, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| HIHead, Inc.-nas Key West Airfield Repairs | Key West | FL | — | ◇ UNVERIFIED |
| HIHead INC - Portable Asphalt Plant | Topeka | KS | — | ◇ UNVERIFIED |
| HIHead, INC. - Topeka (asphalt) (air) | Topeka | KS | — | ◇ UNVERIFIED |
| HMHeckett Multiserv Plant 18 a Harsco Company | Steelton | PA | — | ◇ UNVERIFIED |
| HPHeckett Plant #21 | Natrona Heights | PA | — | ◇ UNVERIFIED |
| HEH E Hunewill Construction Co, INC | Winnemucca | NV | — | ◇ UNVERIFIED |
| HMHeidelberg Materials Ne Llc/rich Hill Quarry | Connellsville | PA | — | ◇ UNVERIFIED |
| HMHeidelberg Materials Ne Llc/rich Hill Quarry | Connellsville | PA | — | ◇ UNVERIFIED |
| HNHeidelbergmaterials Ne Llc/wrightsville | Wrightsville | PA | — | ◇ UNVERIFIED |
| HMHeidelberg Materials Southeast Agg LLC Portablr Crushing Plant #1 | Georgia | GA | — | ◇ UNVERIFIED |
| HWHeidelberg - Watertown Quarry | Pamelia | NY | — | ◇ UNVERIFIED |
| HMHeidleberg Materials Southeast Agg LLC - Rougemont | Rougemont | NC | — | ◇ UNVERIFIED |
| HSHelena Sand & Gravel | Helena | MT | — | ◇ UNVERIFIED |