| GIGraymont Industries | Pleasant Gap | PA | Nonmetallic Mineral Product Manufacturing327410 | — | ◐ LIKELY ACTIVE |
| GWGraymont Western Lime INC | Gulliver | MI | Nonmetallic Mineral Product Manufacturing327410 | — | ◐ LIKELY ACTIVE |
Graymont Western US INC Pilot Peak | West Wendover | NV | Nonmetallic Mineral Product Manufacturing327410 | — | ◐ LIKELY ACTIVE |
| GWGreencastle Wdf Facility - Buzzi Unicem USA | Greencastle | IN | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| GCGreenhill Concrete Broken Arrow Batch Plant | Broken Arrow | OK | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| GCGreystone Concrete Products | Henderson | NC | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| GFGuardian Fabrication LLC - Plant #2 | Galax | VA | Nonmetallic Mineral Product Manufacturing327215 | — | ◐ LIKELY ACTIVE |
| GIGuardian Industries | Corsicana | TX | Nonmetallic Mineral Product Manufacturing327211 | — | ◐ LIKELY ACTIVE |
| GIGuardian Industries CORP | Geneva | NY | Nonmetallic Mineral Product Manufacturing327211 | 100-499 | ◐ LIKELY ACTIVE |
| GCGulf Coast Precast INC | Ft Myers | FL | Nonmetallic Mineral Product Manufacturing327332 | 20-99 | ◐ LIKELY ACTIVE |
| GGuntersville | Guntersville | AL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
H2 Pre-cast, INC | E Wenatchee | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◐ LIKELY ACTIVE |
| HBHanson Brick Stanton Plant | Stanton | KY | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| HPHanson Pipe & Precast LLC - Grand Prairie Site | Grand Prairie | TX | Nonmetallic Mineral Product Manufacturing327332 | — | ◐ LIKELY ACTIVE |
| HWHarbison Walker Refractories Plant | Windham | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| HCHarvey Cement Products | Harvey | IL | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| HQHayward Quartz Technology | Fremont | CA | Nonmetallic Mineral Product Manufacturing327212 | 100-499 | ◐ LIKELY ACTIVE |
Heavy Materials LLC | Saint Thomas | VI | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials US Cement Llc/ Nazareth | Nazareth | PA | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| HEHeldenfels Enterprises, INC. | San Marcos | TX | Nonmetallic Mineral Product Manufacturing327310 | 100-499 | ◐ LIKELY ACTIVE |
| HBHenry Brick Company, INC. | Selma | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| HCHercules Cement CO LLC | Stockertown | PA | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| HPHesperia Plant 31 | Hesperia | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| HSHess Services - Hays (230th Ave) | Hays | KS | Plastics and Rubber Products Manufacturing326122 | — | ◐ LIKELY ACTIVE |
| HCHma Concrete LLC Dba Heritage Concrete Heald Street Facility | Wilmington | DE | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| HSHm Southeast Cement Llc/harleyville Site | Harleyville | SC | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| HRHolcim Ravena Facility | Ravena | NY | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| HUHolcim USA INC - Lafarge Alpena Plant | Alpena | MI | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
Holcim (us) INC. | Holly Hill | SC | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| HUHolcim US INC | Theodore | AL | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| HIHolcim (us) INC - Portland Plant | Florence | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| HUHolcim US - Paulding Plant (including Systech Env Corp) | Paulding | OH | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| HWHolcim Wcr - Cs-main | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| HMHolland Manufacturing CORP | Dolton | IL | Nonmetallic Mineral Product Manufacturing327120 | 20-99 | ◐ LIKELY ACTIVE |
| HMHood Mfg INC | Santa Ana | CA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| HCHot Cell Services CORP | Kent | WA | Nonmetallic Mineral Product Manufacturing327215 | — | ◐ LIKELY ACTIVE |
| ILIndiana Limestone Fabricators | Spencer | IN | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| IPInternational Precast Solutions LLC | River Rouge | MI | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
| ISInternational Steel Group | Georgetown | SC | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| IBInterstate Brick Company: Brick Manufacturing Plant | West Jordan | UT | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| ICIowa City Ready Mix INC | Iowa City | IA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| IPIrwindale Plant 13 | Irwindale | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| IGItw Global Safety | Elmhurst | IL | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| JMJacam Mfg. - Organoclay Processing | Sterling | KS | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| JWJackson Wilbert Burial Vault CO. | Jackson | TN | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| JHJames Hardie Building Products | Plant City | FL | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| JHJames Hardie Building Products | Fontana | CA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
Johns Manville | Berlin | NJ | Nonmetallic Mineral Product Manufacturing327993 | — | ◐ LIKELY ACTIVE |
Johns Manville International INC | Waterville | OH | Nonmetallic Mineral Product Manufacturing327212 | — | ◐ LIKELY ACTIVE |
Johns Manville - Mcpherson | Mcpherson | KS | Nonmetallic Mineral Product Manufacturing327993 | — | ◐ LIKELY ACTIVE |