| TOTxi Operations LP | Streetman | TX | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| UCUmbra Cuscinetti INC | Everett | WA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| UCUnifrax Corporation | New Carlisle | IN | Nonmetallic Mineral Product Manufacturing327993 | — | ◐ LIKELY ACTIVE |
| UAUnited Abrasives INC | Willimantic | CT | Nonmetallic Mineral Product Manufacturing327910 | — | ◐ LIKELY ACTIVE |
United Lens Company, INC. | Southbridge | MA | Nonmetallic Mineral Product Manufacturing327212 | — | ◐ LIKELY ACTIVE |
United States Gypsum Company | Shoals | IN | Nonmetallic Mineral Product Manufacturing327420 | — | ◐ LIKELY ACTIVE |
| USUnited States Tile CO Corona | Corona | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| UDUS Dod Usaf Tyndall Afb Range | Tyndall Afb | FL | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| UGUS Gypsum Corporation Auburn | Auburn | WA | Nonmetallic Mineral Product Manufacturing327420 | 20-99 | ◐ LIKELY ACTIVE |
| UBUtility Block | Albuquerque | NM | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| UCUtility Concrete Products | Morris | IL | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
| UPUtility Precast, INC. | Concord | NC | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| VRVandalia Ready Mix | Vandalia | IL | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| VPVcna Prestige Concrete-alta | Jacksonville | FL | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| VPVcna Prestige Concrete-lockhart | Orlando | FL | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| VUVesuvius USA | Charleston | IL | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| VIVfp INC | Duffield | VA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
| VIVictor Insulators INC | Victor | NY | Nonmetallic Mineral Product Manufacturing327110 | 20-99 | ◐ LIKELY ACTIVE |
| VIView INC | Olive Branch | MS | Nonmetallic Mineral Product Manufacturing327215 | 20-99 | ◐ LIKELY ACTIVE |
| VRViking Ready Mix | Tyler | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| VIViracon INC - 800 | Owatonna | MN | Nonmetallic Mineral Product Manufacturing327215 | — | ◐ LIKELY ACTIVE |
| VCVirginia Concrete Company INC - Chantilly Plant | Chantilly | VA | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| WMWashington Mills | Hennepin | IL | Nonmetallic Mineral Product Manufacturing327910 | — | ◐ LIKELY ACTIVE |
| WBWatsontown Brick Co/watsontown Plt | Watsontown | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| WPWaxahachie Plant | Waxahachie | TX | Nonmetallic Mineral Product Manufacturing327212 | — | ◐ LIKELY ACTIVE |
| WFWebb Furniture Enterprises Llc# 4 | Galax | VA | Nonmetallic Mineral Product Manufacturing327215 | — | ◐ LIKELY ACTIVE |
| WWWebb Wheel Products INC | Cullman | AL | Nonmetallic Mineral Product Manufacturing327910 | 100-499 | ◐ LIKELY ACTIVE |
| WPWeber-stephen Products LLC | Huntley | IL | Nonmetallic Mineral Product Manufacturing327110 | 100-499 | ◐ LIKELY ACTIVE |
| WCWells Concrete Products | Wells | MN | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
| WCWestview Concrete CORP | Olmsted Falls | OH | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| WRWhite River Materials | Batesville | AR | Petroleum and Coal Products Manufacturing324121 | 20-99 | ◐ LIKELY ACTIVE |
| WRWieberg Red-e-mix INC - Meta | Meta | MO | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| WGWillamette Graystone - Medford, Or Block Plant | Medford | OR | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| WGWillamette Graystone - Salem | Salem | OR | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| WIWoodward INC | Loves Park | IL | Nonmetallic Mineral Product Manufacturing327410 | — | ◐ LIKELY ACTIVE |
| WRWorld Resources CO | Pottsville | PA | Nonmetallic Mineral Product Manufacturing327999 | — | ◐ LIKELY ACTIVE |
| 3C3m Company - Building #49 | Prairie Du Chien | WI | Nonmetallic Mineral Product Manufacturing327910 | — | ◐ LIKELY ACTIVE |
| 3F3m-cumberland Facility | Cumberland | WI | Nonmetallic Mineral Product Manufacturing327910 | — | ◐ LIKELY ACTIVE |
| 3D3m Detroit Abrasives | Detroit | MI | Nonmetallic Mineral Product Manufacturing327910 | — | ◐ LIKELY ACTIVE |
| ARAa Ready Mixed Concrete | Gardena | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| AFAbrasive Finishing INC | Chelsea | MI | Nonmetallic Mineral Product Manufacturing327910 | — | ◐ LIKELY ACTIVE |
| ABAcme Brick Company | Malakoff | TX | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| ABAda Batch Plant | Ada | OK | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| AAAdams an Oldcastle Co-asheville | Asheville | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| AAAdams an Oldcastle Co-charlotte | Charlotte | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| AAAdams an Oldcastle Co-colfax | Colfax | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| AAAdams an Oldcastle CO Greensboro | Greensboro | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| AAAdams an Oldcastle Company | Castle Hayne | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| APAds Pipe Dba Frederick Precast | Greencastle | PA | Nonmetallic Mineral Product Manufacturing327332 | — | ◐ LIKELY ACTIVE |
| AAAgc Automotive Americas | Elizabethtown | KY | Nonmetallic Mineral Product Manufacturing327215 | — | ◐ LIKELY ACTIVE |